I use Ionic lithiums. Contact Drewcraft and he does give a small discount. Drewcraft_LLC_Home_Page - Drewcraft LLC
5 yr warantee, 10 yr expected lifespan depending how you take care of them. Good for 2000 to 5000 cycles of charging. Had them for 3 months now and love them. I use 2-100 amps in parallel for my 12 v. Powerdrive v2 MK and primarily long line jigs and troll cranks. Fish 6-7 hrs at a time of continuous running and don’t have to charge them except after 2-3 times of fishing. I am only using about 23% of the batteries on constant trolling, each time out. For my electronics, I have a mega 10 DI+ g3n For my mega 360 and a 7 Mega DI G3n fOr charts and 2d/DI. Also a gps heading puck, and at the back, a 9 mega SI g2n and everything networked using a Ionic 50 amp lithium. I get 2 days of fishing out of it before I charge. The Ionics come with a phone app bluetoothed to each battery. When charging,,it shows temp of the battery, how many hrs/minutes to charge fully, the percentage it is charged at, the amps your charger is charging into each battery, the balance of all the cells of each battery, the volts of each battery output, also the cycles you have charged each battery. A cycle only counts when you have charged your battery from 0% to 100% a full time. It keeps track if you were to charge only 25% to full...that is 1/4 of a cycle till that charging cycle reaches 100% for a fully counted cycle. When running the batteries,,the phone app will show everything as previously stated but will give you the hours and minutes of power left as your using it. It will show the amps your electronics or trolling motor is pulling. How many volts It’s real time using. Yes,,expensive but the phone app Ionic has is worth its weight in gold as to gage your performance and needs. No mess and weight wise..the 50 is 17 lbs, the 100 amp is 27 lbs. I will never go back to wet cells and the pain of maintaining them. Boat wise,,had to lower motor 1.5 inches on my g3 1648 jon as it sits higher in the water with a 200lb loss, take off way quicker,,gas consumption is less with less weight, speed increase of 1-2 mph. Tons of bass tourney fishermen are using 2-50 amps for their 24 v trolling motors as well as 3-50 amps for their 36 v trolling motors fishing 8-10:hr days/tourneys. And 125 amps for their big motors and electronics. Here is a good read. Who wants lithium?