* 【4X Fast Charging & Saving 75% Time】14.6V 40A lithium battery charger has a 40A high efficient charging current, which is 4 times more charging current than a 14.6V 10A charger. The 40A charger just takes 5 hours to fully charge one 12V 200Ah LiFePO4 battery. Save 15 hours than a 12V 10A charger directly, it means saving even 75% time. * 【6 Safety Protetection】 14.6V 40A Lithium Battery Charger incorporates six essential safety protections:over temperature protection, reverse polarity connection protection, output short-circuit protection, output over-current protection, over-voltage protection, under voltage protection. With these advanced safeguards, you can enjoy fast charging while staying worry-free about the safety of both your battery and charger. * 【Activation Function】LiFePO4 battery charger supports a specific 0V charging function. It can charge the lithium battery from 0V, if your battery's BMS cut-off protection is triggered, this charger can activate your deeply sleeping battery to normal voltage. It is also suitable for repairing long-term unused and dead batteries. * 【Born for the LiFePO4 Battery 40A lithium-ion battery charger is born for the LiFePO4 battery. We highly recommend you use a compatible charger for your LiFePO4 battery. The dedicated LiFePO4 battery chargers not only support charging the LiFePO4 battery to 100% but optimizing the battery’s performance and expand its life to the greatest extent possible.