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Vacations, lockdowns, jobs. There is a lot of reasons why you aren’t driving a lot over a period of time. But how do you actually store it properly over a longer period of time? Will anything actually happen if it just stays idle?
Make sure to check your batteries. Your 12-volt lead-acid battery must be charged and optimally it should be full. The main high-volt lithium-ion battery should be at least 10% charged, but not full. Personally I recommend between 30% and 60%. Do NOT keep your EV plugged in while it’s idle over a longer period of time.
The dendrites/whiskers start to grow in the solid electrolyte interface, which is a film where the solid surface of the anode meets the liquid electrolyte. Ethylene carbonate it the specific cause of why the growth starts. Dendrites or whiskers are small tree-like structures growing inside the battery. When they grow too large, they ruin the battery and reduce the amount of capacity it has.
Though this is not 100% scientific, it is still theoretical believed that keeping some voltage in the lithium will slow this growth down. However, a battery degrades faster over time the more voltage is experienced. So it’s a fine balance, don’t keep it fully charged and don’t keep it depleted.
Also, the battery will deplete itself little by little over a long period of time. So if you leave your car with a very low charge, you’ll risk it getting 100% depleted.
It’s very important to make sure your 12-volt lead acid battery is in a healthy condition and fully charged. Often in electric vehicles you can actually see how much charge there is left on this battery in the settings. If your car doesn’t have this setting you can check it with a multimeter. It doesn’t have to be an expensive multimeter to do the job. If you don’t want to buy it, maybe ask around your family/friends or go to the local mechanic or electrician, they’ll have one for sure.
Morten has been working with technology, IoT and electronics for over a decade. His passion for technology is reflected into this blog to give you relevant and correct information.Read more...