Milwalkee batteries cost too much per amp hour and requires you to buy adapter . I use a Lithium battery with 32 Amp Hours . It runs livescope 12'' screen and black box . mine ran almost 16 hours on one charge . i got it for 250 with charger and never drops below 12 volts . Charges to 16.8 volts . Even Garmin says higher voltage don't make it work better but low voltage not good .Like the light weight battery only 4.8 lbs . and no adapter needed
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Want,,,,sick of my starter battery going dead.....