Lithium Ion battery safety precautions

Batteries tend to have a specific lifespan and generally last a few years at best. We have put together a list of things you can do to help get the longest amount of battery life possible. By following some of these steps you will be able to save yourself almost the cost of a new electric bike by not having to replace the battery too soon.

Heat

We recommend that you keep your battery at a constant temperature when it is not in use. The largest factor when it comes to reducing the life of lithium-ion batteries is being subject to elevated temperatures. Don’t leave your battery or bike in your car if it’s hot out if it is in any way avoidable. Charging large lithium-ion batteries presents a fire risk so when charging, be sure not to cover them or leave them next to flammable items. The safest places to charge large batteries are either outside if it is cool, or if it’s too hot outside a cool garage floor can do the trick.

By riding your electric bike at 100% all of the time it is guaranteed that your battery and motor will generate heat. As we mentioned above, heat is one of the primary reasons for the decline in battery life. We suggest that if you need to ride at full throttle, by all means do it, but only for a short time and then ease off and give your battery a break. When you’re giving your battery a rest either ease off the throttle or switch to pedal assist mode so the demand on the battery is reduced.

Don’t always run to empty

Allowing deep discharges (running the battery down to zero charge) is good every once in a while as it recallibrates the battery’s power gauge however this should only be done roughly every 30 charges. The lower the level of charge available, the harder a batter will have to work to extract it. For all other times we recommend that you allow the charge to run partially down and then top it up.

Extended storage

If you are going on vacation or know that you won’t be riding your ebike for a while, we suggest that you run the battery down to about 40% and then store it. Remember to keep it at a constant, cool temperature if possible. If you can keep it in your refrigerator, do, as this will preserve both charge and battery life while you are away.

Advanced Smart Charger

Batteries generally like to be charged slowly. Forcing too much charge into a battery in a short space of time will cause it to heat up and as we mentioned above, damage the battery. Smart chargers have a dial that allow you to control the amount of current that flows from the power outlet to the battery. The lower the amount of current (in amp hours) you set to feed the battery, the longer it will take to charge. Charging on a very low level of current will take up to 6 hours to reach a full battery from empty, people often don’t have 6 hours to spare when they need a charge so we don’t recommend doing this every time you need to charge up but whenever possible.

Battery capacity

Low capacity batteries tend to have shorter lifespans than those with higher capacities and will need to be replaced more often as a result. The reason they have a shorter life span is because every battery has a maximum life cycle in terms charge cycles (full charge and full discharge) and the further down the life cycle you go, the worse your battery performance will be. Batteries with low capacities will need to recharged more often than those with larger capacities because their discharge time will be shorter. When left idle for long periods, batteries tend to lose quality, if you have the option be sure to ask for a battery with the most recent manufacturing date to ensure that your new battery is in the best condition possible.

We don’t suggest that you follow all of these steps obsessively but taking a few precautions here and there can preserve your battery for years and prevent the need to replace it before it is necessary. 

See more on how to clean your electric bike batter 48v and maintain your electric bike chain, ebike wheels and Tektro brake pads.