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The Redodo 12V 100Ah is a LiFePO4 deep-cycle battery built for trolling motors in the 30–70 lb thrust class. Its usable capacity runs about 101–105Ah, roughly double what a 100Ah AGM gives at 50% depth of discharge, at under a third of the weight. The upgraded BMS adds low-temperature charge cutoff, 300A for 5 seconds and 500A for 1 second of surge, plus moisture and salt-spray resistance. Owners report full days on the water with charge to spare; the trade-offs are the higher upfront cost of lithium and a BMS that will refuse to charge in freezing conditions until it warms above 41°F.
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Lowest price we've seen: $479.68 on Nov 14 at Amazon; highest $489.04 on Oct 31. Tracked across 2 stores since Oct 31.
Owners rate it highly, mostly for runtime and weight. Several report full fishing days on a trolling motor with more than half the charge left, and one ran two 6-hour days at varying speeds and still had 75%.
This is a 12V 100Ah LiFePO4 lithium battery for trolling motors with 30 to 70 lbs of thrust. It is sold here as a 2 pack.
The built-in BMS cuts off charging when the battery temperature drops below 32°F (0°C) and resumes charging above 41°F (5°C). It adds a pre-charge function, automatic recovery after protection, and enhanced moisture-proof and salt-spray resistance. It supports 300A for 5 seconds and 500A for 1 second.
The cells support 4000+ cycles at 100% DOD, or 15000 cycles at 60% DOD, and the battery has a 10-year service life. Batteries can be expanded up to 4P4S to form a 48V (51.2V) 400Ah pack with 20.48 kWh of energy. It is not suitable as a starter battery, golf cart battery, or for high-power uses such as water pumps, electric jacks, elevator lifts, pool vacuums or mowers.
