Hi-Power
36V 120Ah Lithium Trolling Motor Battery + Charger | Hi-Power HP36-120Ah
36V 120Ah Lithium Trolling Motor Battery + Charger | Hi-Power HP36-120Ah
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Hi-Power HP36-120Ah — 36V 120Ah Lithium Battery
Charger included. A single 36 V pack to get an older cart or a trolling-motor setup out of lead entirely. 4,320 Wh in a 21" × 9" × 9" case at 43 lb, and a lithium charger ships with it — so it is a complete swap rather than a battery plus a shopping list.
The full 120 Ah is usable, where a 36 V lead bank is normally held to about half its rating. For a trolling motor that is the difference between a half day and a full one.
What's in the box
- Hi-Power HP36-120Ah 36 V 120 Ah lithium battery
- Lithium battery charger — included at no extra cost
- Built-in capacity and voltage display on the pack
Specifications
- Brand: Hi-Power
- Part number: HP36-120Ah
- Nominal voltage: 36 V
- Capacity: 120 Ah — 4,320 Wh
- Peak discharge: 600 A
- Dimensions: 21" × 9" × 9"
- Weight: 43 lb
- Warranty: 5 years on the battery, 90 days on the included charger. See our Warranty & Return Policy.
- Free shipping to the lower 48 states.
Trolling motors and marine use
36 V is the standard for larger trolling motors, and this replaces three 12 V batteries with one 43 lb pack you can lift single-handed. It gives usable capacity right down the discharge curve rather than losing thrust as the bank sags. If you are running a specific motor, send us the model and we will confirm the pack suits its current draw before you order.
Frequently asked questions
Does it really come with a charger?
Yes — a lithium charger ships with this pack. It carries a 90-day warranty; the battery itself is covered for five years.
How many batteries does this replace?
Three 12 V batteries in a 36 V bank, or six 6 V.
Will it fit my cart or boat?
It is 21" × 9" × 9" and 43 lb. Measure your bay or locker first, and send us the dimensions if it looks tight.
Can I keep using my old charger as a spare?
Not on this battery. A lead-acid charger will not charge lithium correctly and can void the warranty — use the charger supplied, or a lithium-profile unit.
Shop related: All Hi-Power Lithium · All Lithium Batteries · Marine Parts · Lithium Chargers

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