My deep cycle battery bit the dust Wednesday while I was out on the water. I got about a year's worth of work out of it and now it wont hold a charge past 10V. I've been pretty rough on this 100$ battery so I definitely got my money's worth out of it. I'm thinking about making the conversion over to lithium since I don't want to go through this song and dance every year.

My main concern is picking up a battery (or two if need be) that will have enough capacity to keep me powered on all day (10-12 hours MAX, most fishing days are shorter than this but I would like to be prepared for a long day) . I'm using a 12V MinnKota Endura (45lb?), Garmin 93SV with no LS, and a Garmin Striker as a flasher for the front. Here's the questions I have:

1. Am I making a mistake by wiring my sonar units into the same battery that is supplying my trolling motor?

2. Is a 100AH battery overkill for the equipment I'm using on my tiny Jon boat?

3. Would a combo of two smaller batteries be a better fit for what I'm trying to do? (One battery for the sonars, TM has it's own independent battery)



No onboard chargers, lights, gadgets, doohickeys, etc. I'm working with limited space in this tiny boat, so keep that in mind. Hope everyone had a blessed week!