I have a PP Charge in my 2019 Puma, when I bought the Puma it had 3-111AH 12v K2 Energy Lithiums in it for the trolling motor and a AGM for starting / electronics. I installed the PPC and it was always having trouble with the middle lithium, think it something with the BMS. I bought a Ionic 36v-50AH & a 12v-112AH Ionic starting battery and hooked them up to the PPC. I kept one of the K2 lithiums just to run my electronics and charge it with a NoCo 10amp charger. All is good now and usually by the time I get back to the ramp, my batteries are close to 90% charged.