How long it takes to charge an eBike battery depends on several factors including:
- How much charge battery currently holds
- Type of LI battery – aka how much storage capacity
- Type of charger – newer chargers are faster
- Age of battery – Older batteries don’t charge as efficiently
- Temperature – Batteries charge more efficiently in cooler temperatures
Most eBike batteries need 2-6 hours to charge to full capacity, but full capacity might not be what you want on LI batteries. Let’s learn some tips on how to charge your eBike battery for maximum useful life.
Read the Instructions! – Again, the instructions or resources that come with your battery are the number one source for accurate charging information and tips but there are general things to know about charging LI batteries.
LI batteries act differently than traditional lead acid batteries, namely in how to charge it. With traditional batteries you plug the charger in, wait until it reaches 100% charged, then unplug and use the battery.
You can do that for LI batteries, but you’ll quickly decrease its serviceable life if you let the battery drain to zero then charge it up to 100%. Rather than a traditional power cycle, use these LI battery charging tips:
The First Charge – The first charge should be a long one – at least 12 hours. An initial, long charge helps condition the battery to optimal charging conditions
Ongoing Charging – LI batteries do not like to be completely drained. If possible, never ride your battery below 20% before recharging. Most eBike experts agree anywhere from 25 to 50% capacity is the best time to recharge your battery.
Regular Draining – While you shouldn’t make a habit of draining your eBike battery all the way, a complete drain every 30 to 50 charges could help prolong battery life. Your instruction manual will have tips if a regular battery drain is a good idea.
Frequent Use –One of the worst things you can do for a LI battery is let it sit for long periods without charging or use. It’s understandable if your eBike is put away for the winter but you should make a note to put your charger on the eBike battery for a few hours every two to three weeks and go for a short, charged ride if possible. Regular use is one of the best things you can do to keep your LI batteries lasting longer.
Thanks to lithium-ion, eBike batteries are compact and easy to use. For most eBike batteries you only need to follow instructions by switching your battery off and plugging it in for 2-6 hours. Follow the above tips to make your battery last as long as possible and you’ll be fully charged for a great eBike ride.