Golf Trolley Batteries: Lifespan Secrets the Pros Don’t Want You to Know!

Are you tired of your golf trolley battery letting you down mid-round? You’re not ⁤alone, and it’s time to uncover the truth behind “Golf Trolley Batteries: Lifespan Secrets the⁢ Pros Don’t Want You to Know!” In this article, we’ll dive deep into the often-overlooked factors that influence ​battery longevity, providing you​ with insider tips ​that even seasoned golfers might keep​ to themselves. By the end, you’ll ‍not only understand‌ how to ⁢extend your ⁤battery’s lifespan but also enhance your overall ⁣golfing experience. Let’s⁢ tee off on a journey to‌ better ⁤performance and reliability on the ⁣course!

Understanding Golf Trolley Battery Types

When it comes to choosing ⁢the right battery for your golf trolley, it’s a bit like picking the perfect putter—there are various options, and one size definitely does not fit all! The two main types of ⁢batteries you’ll encounter are lead-acid and ⁣ lithium-ion. Each​ has ‍its own ⁣strengths ⁢and weaknesses, much like ‌your amateur attempts to sink a hole-in-one.

Lead-Acid ⁣Batteries

Lead-acid batteries have been around longer than most players on‌ the course. They are heavy and can be a bit bulky, but they’re also affordable ‍and reliable. Typically, they can be divided into two categories:

• Flooded Lead-Acid: ‍ These require regular⁢ maintenance—think of it ⁣as ⁢giving your​ battery a spa ⁣day now and then. They need water refills, and if⁣ neglected, they could leave you stranded⁣ on ⁤the⁤ 18th hole.
• AGM (Absorbent Glass Mat): These are​ the more advanced cousins of⁢ flooded batteries. They’re ⁢sealed,‍ maintenance-free,⁤ and ‌safer ⁣because they don’t leak. Plus, they provide a longer lifespan, which is a must ⁢for those marathon rounds!

Lithium-Ion Batteries

On the other hand, we have ⁣lithium-ion batteries, the⁤ sleek, ultra-light models that ‌have people buzzing on the course. These bad boys are⁣ like the ‍sleek sports cars of ​the ⁢battery⁣ world—more expensive⁤ upfront but‍ pack ⁢a punch in terms of performance. They charge quickly, weigh significantly less, and can last much longer than their lead-acid counterparts without suffering​ from the⁣ dreaded ‘memory ​effect.’ This means you can charge them⁤ whenever ​it’s convenient—perfect for those of us who can’t always‍ find time between rounds!

Choosing the Right One

Ultimately, the choice between‍ a⁢ lead-acid and a lithium-ion battery comes down to your budget, how often you play, and what⁣ features are most ‍important to‍ you. If you’re a weekend warrior‌ who enjoys ‌the ⁤occasional round, a lead-acid may suffice. But if you’re in it for the long haul and play often,⁤ investing in a lithium-ion might save you‌ headaches (and weight!) down the road.

As you ‌ponder your options, remember: batteries are like golf clubs; the right one can change your game. So weigh the pros‍ and cons, and choose wisely!

Maximizing Your ⁣Battery Lifespan

To ensure your golf⁤ trolley‌ battery remains as⁢ spry as a fresh ​golf ball, you’ll want to adopt some best practices that pros have discovered over years of play. First off, regular maintenance is key. This doesn’t‍ mean ⁢donning ‍a lab coat and diving into complex ⁢repairs; it can be as simple as checking the terminals for corrosion and keeping‌ them clean. A little‌ bit of baking soda and water can work ⁤wonders to remove ‍any pesky buildup. Think of‌ it as‌ a spa day for your battery!

Another vital aspect is understanding charging habits. It’s tempting to stick your trolley on the ⁤charger after ⁢every round—after ⁣all, you ​just​ want to be ready for the next game—but that can lead to⁢ shorter battery life. ⁣Instead, try to only charge the battery after it’s been depleted to ⁣about 50%. It’s kind ​of like not overfeeding your pet; a little restraint goes a long way. Use a quality charger designed specifically ‍for your battery type, as⁢ this can help prevent overcharging and extend its lifespan significantly.

Optimal Storage Practices

Storing your battery ‌properly is as ‍crucial ​as keeping your‌ putter in the right condition. Avoid leaving your battery in extreme temperatures, which ⁢can cause irreversible‌ damage.‍ If you’re storing it ‌for the ​off-season, take it indoors to a​ stable temperature. Sacrifice a little garage space ​for your battery—after all, it deserves‌ a​ cozy corner as ⁣much as your golf clubs do!

Here’s a quick ‌cheat ⁢sheet for optimal battery practices:

Action	Description
Regular Maintenance	Clean terminals, check⁢ for corrosion.
Charge Wisely	Recharge after about 50% depletion.
Proper Storage	Avoid extreme temperatures; ⁣keep indoors.

By ⁤following these straightforward ⁤tricks, you can keep ⁢your ⁢golf trolley battery in tip-top shape, ensuring that it remains your trusty ⁢companion on the green! Just remember, a little love and care go a long ⁤way—just like a ⁢well-timed ⁤swing!

Top Tips for Battery Maintenance

Battery ⁣maintenance is‍ like giving your golf ‌trolley a​ spa‌ day—it keeps everything running smoothly and ensures you’re ready for the ‌long haul. By taking ‌a⁤ few‍ simple steps, you‌ can extend the lifespan of your golf trolley battery and avoid those frustrating moments when ‍you run out of juice mid-round. Here’s how ⁤you can treat your battery right.

Regular Charging Habits

Start by establishing a consistent charging routine.​ Most batteries perform best when they’re kept between 20% and ⁤80% charged. Think ​of this like ​your golf game’s ⁤sweet⁣ spot—too low, and you‌ risk losing power; ⁣too high, and you can strain the battery. Always charge your trolley after each round, rather than waiting for the battery to fully deplete. If you’re ⁤not ​hitting ⁤the green every day,⁤ aim to ‍give ⁣it a top-up at least ‌every ⁣month.

Storage ⁢Conditions Matter

Just as you wouldn’t‍ leave your clubs out in the rain, your battery deserves better treatment too!⁣ Store your golf trolley in a cool, dry ⁣place.⁢ Extreme temperatures, especially heat, ⁣can significantly reduce your battery’s lifespan. Ideally, you want the temperature to be around 50-77°F (10-25°C). And speaking of storage, if you plan to tuck your trolley‍ away ⁢for the winter, don’t forget to disconnect the battery and give it‌ a⁤ full charge before storing it. This little step can prevent⁤ sulking stains of sulfation, which ‍is just a fancy way of saying your battery’s not joking around anymore.

Maintenance Checks

Conducting‍ routine maintenance checks⁣ is‍ crucial. Here are a few tips to keep your⁢ battery in prime ‌condition:

• Inspect for corrosion: Clean the terminals and connections regularly to prevent buildup.
• Check⁢ electrolyte levels: If you have a lead-acid battery, make sure the water levels are adequate—refill⁢ with distilled water if needed.
• Monitor performance: If you’re noticing your trolley isn’t going ‌as ⁢far as it used to, it ⁢might be time to assess the battery’s health.

Incorporating these practices into your routine doesn’t require a PhD in battery science. Just a little⁣ awareness and effort can go a long⁤ way in keeping your golf trolley humming like a ‌pro on the fairway. So next round, remember: A happy battery equals a happy golfer!

Signs of a Failing Golf Battery

There are a​ few telltale ⁣signs‌ that your golf trolley⁣ battery might⁣ be ‌waving a white‍ flag of surrender, even ⁤before it goes kaput. First, keep an⁣ ear⁢ out for ⁣sounds during operation. If your trusty trolley starts emitting strange noises—like a low-level hum or ⁤intermittent clicks—your battery may be⁣ struggling to deliver the required‍ power. Another red ⁤flag ‍is if your trolley seems to struggle getting up hills or loses⁣ speed,​ especially when⁢ you need it most on the back nine. If you find yourself huffing and puffing while pushing the ⁣trolley,⁢ it’s time to inspect that battery!

Performance Indicators

One of the most glaring indicators of ​a failing battery is a sudden reduction in run time. If ‍your battery used to⁣ last a full 18 holes and is now barely ⁤making it ​through 9, um, ‌that’s‍ not normal! Check your battery’s charge cycle. A ⁣healthy battery should⁢ be able to hold a ‌charge optimally.

Another symptom you might notice? A battery that feels unusually hot to ‍the touch after‌ just a short usage session. Think of this as your battery’s way‍ of saying, “I⁢ need a break!” High temperatures can signal internal⁣ damage or a short circuit, so if it’s sizzling, it’s ⁤worth looking into.

Visual and ⁤Practical Clues

When⁣ inspecting your battery, keep an eye out for visible⁢ damage—bulges, cracks, or corrosion can ​all ⁤indicate serious issues.⁤ If corrosion is ‍present, it​ can often be cleaned ⁣off, but frequent reappearance suggests the battery is wearing out faster than a putter on ​a ‍frugal golfer’s budget. ⁣

Lastly, if ⁢you notice a funny smell—almost like rotten ​eggs—it could mean‌ your battery is leaking‌ or releasing gases that ⁢can be hazardous. If that’s the case, it’s best to put your trolley away and promptly⁢ consult a professional‌ or replace the battery altogether. ⁣Using these easy-to-spot signs can save⁤ you ⁤from an unsolicited workout on the golf course!

Choosing​ the Right Charger for Longevity

When it comes to preserving the life of your golf trolley batteries, ⁤the charger you choose plays a pivotal ⁢role. Just like selecting⁤ the right shoes can enhance your game on ⁣the course, a suitable ‍charger can keep your⁣ batteries in ⁣peak condition. Different batteries have varying charging requirements, so it’s essential to understand the nuances that can affect longevity. Opting for a charger specifically designed for your battery type, whether it’s lead-acid⁢ or lithium-ion, can ⁢make all the difference.

Understanding Compatibility

First and foremost, compatibility is key. Using ​a charger that is not matched‍ to your battery type can lead to‍ undercharging or, worse, overcharging.​ This can not only reduce the‌ overall lifespan of your ⁤batteries⁢ but also may lead to hazardous situations, like swelling or leakage. Here’s a simple ⁤checklist to guide you in selecting the right charger:

• Voltage Rating: Ensure the charger’s ‌voltage matches that of your battery.
• Amperage Output: Choose a ⁣charger with an appropriate amperage to prevent overheating.
• Smart Features: Look ⁢for chargers with ‍smart ‍technology that ‌can⁤ adjust the charging cycle based on battery ⁢needs.
• Brand⁣ Reputation: Stick with trusted brands that have positive ⁤reviews; they often provide ​better reliability.

Charging Techniques and⁢ Timings

Another⁣ aspect to consider is how and when you charge‍ your batteries. A major misconception is that you should wait ⁤until⁢ your battery is completely drained before charging ‌it again. This can actually stress the battery and shorten its ⁣lifespan.⁤ Instead, aim to top off your battery whenever possible. Think of it like refueling your‍ car; it’s better to keep a little⁤ gas in the tank than to let ⁣it go ​bone dry.

Additionally,⁢ be‌ wary of charging in extreme temperatures. Just as a hot summer day can‍ wilt your favorite plant, high temperatures can affect your⁤ battery’s performance.⁤ Ideally, charge in a cool, dry place and avoid leaving your charger plugged in longer‍ than necessary.

Here’s a quick overview of optimal charging practices:

Charging Practice	Recommendation
Charge Frequency	Every 50-75% discharge
Temperature	Cool, dry ⁤environment
Smart Charging	Use a charger ⁣with automatic cutoff

By taking these precautions, ⁤you​ not only enhance your golf trolley battery’s ‍lifespan but also ensure that your rides on the ‍course are smooth and trouble-free. Just remember,⁣ a little bit of diligence in your charging routine can lead to significant dividends on the green!

What Golf Pros ‌Know About Batteries

When⁣ it comes ⁢to golf trolley batteries, the ​pros⁤ possess a treasure trove of ​insights that can elevate your game. Understanding battery types is ⁣key. From lead-acid to lithium, each kind has⁣ its own set of advantages and​ quirks. ⁣For ⁤those ‍who swing​ with ‍finesse but ‌get ‌fatigued⁤ by the weight of heavy batteries, ​lithium options—though pricier—are lightweight and tend to have longer lifespans. Conversely,‍ lead-acid batteries, while more affordable, require diligent maintenance and can ​leave ‌you‌ stranded ‍when you‍ least expect it if not monitored properly.

The Secret to Longevity

Here’s⁣ a‍ tip straight from the course: temperature ‍does matter. Golf⁢ pros are often seen‌ adjusting their batteries to avoid exposure to extreme heat ‌or cold, as these conditions can drastically affect lifespan.⁢ Most batteries fare best​ at room temperature—a ⁢cozy 20-25°C (68-77°F) is optimal. Think of it like keeping your ⁢favorite golf club well within reach—even the best equipment needs the ⁣right environment to perform its best!

Maintenance⁣ Matters

Equally important is maintaining your battery like you would your swing. ​Regular charging, cleaning, and even the⁢ occasional check-up can go a long way. ​A few key practices include:

• Charging the battery ⁢after every use to⁢ avoid ⁤deep⁢ discharges.
• Cleaning terminals to prevent corrosion ⁣and ensuring ⁤a snug connection.
• Storing it in a cool, dry place⁢ when not ​in‌ use.

So, invest a little extra time in care, and your battery will reward you with consistent power for many rounds to come.

Troubleshooting Tips

If your battery is ⁢underperforming, don’t fret! Here ⁢are ​some⁤ troubleshooting ​tips that pros often rely on:

| ⁤Issue ‍ ⁣⁤ | Possible Solution ⁣ ⁢ |
|——————–|———————————–|
| Short run time ‍ |⁢ Check for old connections/weak cells |
| Slow charging ⁢ | Inspect the ⁣charger and connections |
| Battery⁤ not⁣ holding charge |​ Consider a replacement or battery ​recalibration⁢ |

Understanding these ⁣little intricacies ​not only ⁣boosts your trolley experience but might just give you that edge in your next round.

Real Costs of Neglecting‍ Battery Care

Neglecting the care of your golf trolley’s battery can lead ‍to a cascade of problems that ⁤might just put‍ a dent in ⁢your day on the course—and your wallet. Ignoring routine maintenance and proper charging habits doesn’t just mean an inconvenient moment when you’re halfway through the 8th hole. ⁤It can significantly shorten the lifespan of your battery, rendering what could have‍ been years of reliable⁣ performance into a mere​ season or two. ⁤

### The‍ Hidden Costs

When golfers think about battery neglect, they ⁢often just see the immediate inconvenience. However,‍ the hidden ⁤costs​ go well beyond that:

• Replacement ‍Expenses: A top-quality battery‌ can cost you hundreds of‍ dollars. If you find yourself replacing‍ it every ‌couple of years ‍due to neglect, those savings from regular​ upkeep suddenly vanish.
• Time Lost: Imagine your battery dying just as ⁣you’re about to sink a‍ crucial putt.​ Not only does that throw off your game, but it also⁢ means precious minutes spent‍ on the phone with customer service or waiting for a new battery to arrive.
• Performance Issues: A poorly maintained battery can lead to inconsistent power delivery, affecting your trolley’s speed and reliability.​ If you’re‍ planning to compete, that could mean the difference between ⁣winning ‍and losing.

### Neglected‍ Batteries: An Environmental⁣ Concern Too

It’s ⁢not just about your own game; neglecting battery care has environmental implications as well. Improperly⁤ maintained batteries can leak hazardous materials, ​contributing to pollution and‍ harming local ecosystems. By ​taking the time to care for⁤ your battery, ‌you not only enhance your own golfing experience ⁣but also play a part in protecting the environment.

On top of that, research shows that some of​ the ⁤newer battery ⁣technologies might actually have longer lifespans if cared for properly. This ‍means that adopting smarter habits ‌today could save you money tomorrow.⁤ By focusing on regular checks, proper charging techniques, and storage methods, we can ensure ​our​ batteries remain in top shape—saving​ a few bucks, sparing frustration, and enhancing our overall‍ golfing experience. Who wouldn’t want that?

Exploring ⁤Golf Trolley Battery Brands

When⁢ it comes to keeping your‍ golf trolley rolling smoothly, the brand of ⁢battery you choose can ‍feel like a game‍ of roulette—sometimes you ‌hit the jackpot, other times, well, let’s just say your trolley ends up ⁤taking a permanent vacation in the garage. Whether​ you’re a ⁢casual weekend ⁢player ​or ‌a die-hard golfer, exploring the best battery ⁢brands is crucial⁤ to maximize your game’s efficiency and enjoyment on the course.

One standout choice in the ‌golfing community is ‌ Trojan⁣ Battery Company. Renowned for their deep-cycle batteries, Trojan has built a reputation akin to a seasoned pro at a major tournament. Their batteries ⁢often lead the pack with long lifespans and reliability, making ⁢them a solid investment for ⁤any golf enthusiast. Then there’s Optima, famous‌ for their spiral-cell design that provides the ​kind of cranking power you need to start your⁤ day off right—much like that⁤ first⁣ cup of coffee! The downside? They⁢ might stretch your⁤ wallet a bit, ​but the performance⁢ usually ⁣justifies‌ the expense.

Types of Batteries to Consider

• Lead-Acid Batteries: Traditional and ‍well-known, these ⁣are ​often more affordable but require regular maintenance.
• Gel ​Batteries: A safer option with better performance in extreme conditions—perfect for unpredictable weather on the‍ course!
• Lithium-Ion Batteries: Light as​ a feather and long-lasting, but they can be​ a pricey addition to your golf gear.

However, don’t just⁢ take my word for it. I once swung by a local pro shop and overheard a ⁣lively debate over which battery brand makes the cut. Some swear by Duracell, citing their longer playtime, while others passionately support Varta for their quick charging capabilities. It’s a mixed bag of opinions, making it clear that the best choice might just come down ⁣to your ⁤personal needs, style of play,‍ and of course, budget! Always ‌consider doing⁣ a little research, reading user reviews, and asking fellow golfers for their insights—because while brands can be flashy, real-world performance ‌is what ‌keeps that trolley rolling.”

Q&A

What types ‍of batteries ‍are commonly‍ used in⁢ golf trolleys?

Golf trolleys typically utilize two⁢ primary types of batteries: lead-acid batteries ⁢ and lithium-ion batteries. Lead-acid batteries have been the traditional choice for many years, owing to their affordability and⁤ availability. They‍ come in two ⁤varieties:⁢ flooded and‍ sealed lead-acid (SLA). Flooded batteries require maintenance like regular topping up with distilled water,‌ whereas SLA batteries are maintenance-free, making them more user-friendly.

In contrast,⁤ lithium-ion batteries represent a more modern alternative, gaining popularity for several compelling​ reasons.‍ They are significantly lighter than lead-acid batteries, which reduces the overall weight of the trolley, helping you conserve energy when using​ it. Additionally, lithium ‌batteries have⁤ a much longer lifespan, with many models rated for over ‌2,000 cycles ⁣compared to the 500-800 cycles typical for lead-acid batteries. This longevity can ​translate to considerable savings over time,⁢ despite the higher initial cost.

How can⁣ the lifespan of a golf​ trolley ⁢battery be maximized?

To maximize the lifespan of‍ your golf trolley battery, there are several best ⁢practices to ‌follow. Regular charging after each use ⁢is crucial, especially ‍for lead-acid types, as allowing them to discharge fully can lead⁣ to sulfation and damage. Manufacturers often recommend charging the battery immediately after use, rather than waiting until it’s low. For⁢ lithium-ion batteries, it’s important to avoid ⁣complete discharge as well, ‍although they can​ handle partial discharges better than lead-acid batteries.

Another​ essential factor is to store ⁤the battery properly when not in⁣ use. Keep it ‍in ‍a cool, dry place, ideally at a temperature between ⁣50°F ⁣and 80°F. Extreme temperatures, both hot and cold, can adversely ⁤affect battery performance and longevity. ⁢Furthermore,‍ using a battery maintainer can help by providing a trickle charge that keeps​ the battery in optimal‍ condition without overcharging.

Are there ⁣specific‍ charging⁣ practices to follow for ⁤golf trolley batteries?

Yes, charging practices vary between battery types, and adhering to the correct‍ procedures is ‍critical for optimal performance and⁢ lifespan. For lead-acid ⁢batteries, it is ​advisable to use a⁣ smart charger designed for this battery ⁣type. These chargers prevent‍ overcharging and can ​help maintain⁢ the battery’s health by adjusting the charging rate depending on the ‌battery’s state. Typically, a charge⁢ should take around 8-10 hours for significant replenishment,⁣ but ⁤always refer to ‌the manufacturer’s ​guidelines for specifics.

For lithium-ion batteries,​ charging can be much​ quicker—often ⁢between 3 to 5 hours. It is beneficial to use chargers specifically⁣ designed for lithium batteries as⁢ they usually have built-in protections against overcurrent and overheating. Moreover, ​it’s best to charge ⁢lithium batteries in a range of‍ 20%-80% capacity to reduce wear.‌ In‌ scenarios where quick charging is needed, many lithium options ‌feature rapid charging ‌capabilities without damaging the battery life significantly.

What‌ signs ⁣indicate that a‍ golf trolley battery ⁣may be failing?

Recognizing the signs ⁣of battery failure can help prevent⁢ inconvenience on the course. One of the most ​evident indicators⁤ is a notable reduction ⁢in power. If your golf ​trolley struggles to maintain speed ⁣or seems to slow down ​considerably on flat surfaces, it’s likely that the battery is losing⁢ its ​ability ⁢to hold a⁣ charge effectively. Similarly, if you find that the​ trolley requires more frequent charges⁢ during a round, that’s also a strong indicator of impending battery failure.

Another sign to watch ⁢for is physical swelling or leakage. If ⁣a lead-acid battery bulges​ or shows signs of leakage, it poses a safety risk and should be replaced⁤ immediately. For lithium batteries,⁣ any⁢ unusual ⁣signs of heat or noise⁢ during charging could indicate a malfunction. If you notice any of these symptoms, seeking⁣ professional advice or replacing the ⁣battery as soon as possible ⁤is wise​ to avoid being stranded during play.

Are there eco-friendly options for golf trolley batteries?

Yes, ​there are environmentally friendly options for golf trolley batteries. While ‌traditional⁤ lead-acid batteries‌ pose challenges in terms of ⁢recycling and environmental‌ impact, lithium-ion ​batteries are generally considered more eco-friendly. Despite being manufactured with materials that can be harmful⁤ if not⁣ disposed of properly, the longevity and efficiency of lithium batteries often ​lead to less waste over time.

Additionally, some companies are focusing⁢ on recycled materials for battery production and implementing sustainable⁢ manufacturing practices to reduce their carbon footprint. Another interesting trend is the development of solar-powered battery systems for golf trolleys, which harness renewable energy and‍ greatly minimize reliance on non-renewable energy sources. This could be a game-changer in making golf equipment more sustainable and less impactful on the environment.

What maintenance steps should be ⁣taken for golf trolley batteries?

Regular maintenance is ​crucial⁢ for ensuring the longevity and effective performance of⁤ golf trolley batteries. For ⁤ lead-acid batteries, routine checks⁢ should include ⁤inspecting the electrolyte levels⁣ and ensuring they are topped up ‌with distilled water when necessary. ‍Moreover,⁤ cleaning the battery terminals of ‍any corrosion ⁢or build-up can enhance conductivity and overall performance. It’s suggested to perform these checks every few months or before‌ the ⁣start of a new golfing season.

For lithium-ion batteries, while maintenance is less ‍intensive, it’s still important to keep the battery clean and dry.⁢ Regularly⁤ check for any signs of wear and ensure that ‌the connections are⁢ tight‌ and⁢ free‍ from dust and moisture. Additionally, monitoring‌ the ‍battery’s performance and charging only with compatible chargers will ⁤help maintain its health over the‌ long ‌term. In both cases, consulting the manufacturer’s guidelines for⁢ specific maintenance instructions can make a⁢ big difference in keeping the batteries in peak ⁤condition.

To ‍Conclude

As we wrap up​ our deep dive into ⁣”Golf Trolley Batteries: Lifespan Secrets ⁤the Pros Don’t Want You to ‌Know!”, we hope you feel empowered⁢ with knowledge that will keep your trolley rolling longer and stronger on the green. Remember, the​ secret isn’t just in ⁤your swing,‌ but in the⁣ battery that powers your game. ⁢By⁣ following these tips and tricks, ​you’ll⁣ not‍ only extend the ‌life of your battery but also ensure that you’re not left in⁤ the rough when it comes to unexpected‌ downtime. ⁤So, whether you’re a casual weekend warrior or a‌ seasoned pro, take charge of your ⁣golf⁢ trolley battery and​ let​ your enthusiasm for the game shine through—without the worry of‍ a fading power supply. Now, go ahead and share this newfound wisdom with⁢ your⁣ fellow golfers, before they catch you winning too easily! After all, knowledge‍ is power…and so‌ is a fully charged battery!