The Li-S680-16CK by XS Power is a combo deal consisting of a Li-S680-16 Racing Series 16V Lithium Battery and Li1615 15A 16V High-Frequency Lithium Ion IntelliCHARGER. The battery has a maximum current capacity of 1,200A. Watt-hour rating is 206Wh, cranking amps are 600CA, lead-acid equivalent (PbEq) for cranking amps is 900CA, amp hours are 13Ah, and lead-acid equivalent (PbEq) for amp hours is 39Ah. The polarity layout for this battery is R.