I have been getting low voltage issues on my bow Helix 10 after about a half day of fishing. More common on days I frequently use the Talon. I am going to add another battery and only run my electronics(2-Helix 10/s,1 is MEGA, Lowrance HDS 8) off of this battery. I do not plan to wire it to the big motor for charging purposes. I am going to add a group 27 deep cycle with 105amp hours. Will this battery suffice to run 3 units for a full (10-12 hour) day? I plan on installing a one bank charger for this battery. Thanks for anyones input. I have heard of guys doing this but searched the threads and there is not much information on whether this is a suitable method? Thanks guys