The Li-S925-16CK by XS Power is a combo deal consisting of a Li-S925-16 Racing Series 16V Lithium Battery and Li1615 15A 16V High-Frequency Lithium Ion IntelliCHARGER. The battery has a maximum current capacity of 1,440A. Watt-hour rating is 248Wh, cranking amps are 720CA, lead-acid equivalent (PbEq) for cranking amps is 1,080CA, amp hours are 15.6Ah, and lead-acid equivalent (PbEq) for amp hours is 46.8Ah. The polarity layout for this battery is R.