I replaced a 1st gen Helix 10 S/I with a GN 4 Helix 10 SI. The last 5 trips out the batteries have discharged enough the 25 hp outboard won’t turn over. One pull and it’s going but….
There are two Garmin units and livescope on a dedicated lithium battery without issue. I’m considering doing the same thing with the 2 Hbirds (Gen 4 Helix 9 & 10).
Recommendations on Battery manufacturers?
The Amped Outdoors on the Garmin system has been flawless so far.