How To Charge Lipo Batteries In Series. Do not handle batteries until they are cool. 18.5 volt battery = 5 cells x 3.7 volts (5s) 21.0v.
When charging batteries one by one, you have to repeatedly unplug a battery and plug another one in between charge. When connecting or charging batteries in series your goal is to increase the output of your batteries nominal voltage rating. Std liion is usually charged at c (1 hour rate, ma = mah capacity numerically) initially.
Always keep your lipo batteries at room temperature.
When the amount of volts provided to the battery for recharging fluctuates, the battery’s charging power and capacity gets. I have not seen one in a very long time. I will show you the options for discharging lipo batteries. Always have a class d chemical fire extinguisher nearby when using/ charging lipo batteries.