Magicpaddler wrote on Apr 18^th, 2017 at 11:59pm:

Iotalota I could not figure out how much current your Helix 7 G2N draws from the manual but it looks like between 600 and 900 mA.  That is probably too much for AA batteries. Sense you will be able to recharge them every night I would suggest the Panasonic 3400 mAh cells covered in this thread.    (You need to Login or Register You should get 3 to 5 hours out of a set.   You might consider building 2 battery holders for 4 batteries each and putting them in parallel.

I bought a LiFePo4 20 Ah battery from Bioenno, which should give me approximately 20 hours of run time.  It fits the sonar pod on my FeelFree Lure 13.5 perfectly.  I have a place to stay along the echo trail with power, and I will be able to recharge nightly.  I won't be fishing in the BWCAW or Quetico, so no problem.  Thanks for the advice.