On Tuesday, May 17, 2016 at 10:36:21 PM UTC-7, Jonathan St. Cloud wrote:
What are the differences between the K2 battery offered for $145 and the generic lifepo4 offered for $95, besides price?

An appropriate battery contains a BMS that has overcharge and undercharge protection, and cell balancing. Some of the cheaper batteries do not have a BMS or have a less featured one.

I also use the Starkpower for instruments and a CTC for engine start, have had no problems in several years.