Replace it with a car or motorcycle battery

• Request an active balance or something else to limit minimum voltage for save battery life, if you want to do it manually then add voltage meter to it, minimum at 11.6V for safe, don’t let it down to 10.5V.
• Never use BMS with this set, it might kill your car.
• Max charge 14.6V for 4×3.2V but safety to charge at 14V – 14.2V; for me is 13.4V.
• Safe min is 12.0V.