12V 50Ah Deep Cycle Battery

The 12V 50Ah Deep Cycle Battery is a 12.8-volt LiFePO4 block of 640 watt-hours on M6 terminals, rated IP65. It is the first true deep-cycle size in the range, built for a small boat, a ride-on or robot mower, and a compact solar setup that a full house battery would oversize.

On The Water

A trolling motor, by speed

A Minn Kota Endura 30 transom trolling motor pulls 8 amps on its lowest speed and 30 at full throttle. Fifty amp-hours give about six hours of slow trolling, three and a half hours at a middle setting, and a little under two hours wide open. The 150-amp five-second peak carries the surge as the prop bites at start.

The Boat House Side

Lights, sounder and pumps

Beyond the motor the same block runs the small-boat house side: navigation lights, a fish finder, a bilge or livewell pump and a stereo. Those loads together draw a few amps. A day on the water leaves capacity for the motor instead of flattening a separate cranking battery. The IP65 case takes the spray and dust an open boat or a mower deck throws at it.

Land Use

Mowers and a small panel

A robotic or ride-on mower runs its cutting and drive motors from a battery this size. The 4,000-cycle rating outlasts the machine it sits in. On a compact solar rig, 640 watt-hours bank a panel’s day of harvest for an evening of LED lighting and phone charging, refilled the next day through a controller set to an LFP profile.

Against Lead

Usable capacity and weight

A 12V 50Ah lead battery yields only about 25 amp-hours before its voltage sags too far to use, and 300 to 500 cycles. This block delivers the full 50 amp-hours down to its cutoff, more than 4,000 cycles at 80 percent depth, and weighs 4.9 kilograms against nine or ten for the lead one.

Data

Datasheet

Fit

Charging and banks

Charge at 14.6 volts from a lithium charger or a solar controller on an LFP profile. Up to four blocks go in series for a 48-volt bank and four in parallel for more capacity, matched by resting voltage before any parallel join.