Epoch Batteries 36V 50Ah Essential Series

The Epoch Batteries 36V 50Ah Essential Series is a battery pack with dimensions of 13.0 × 6.8 × 9.44 in, a continuous discharge of 100 A, a peak of 130 A, a weight of 35 lb (15.9 kg) and an ingress rating of IP65.

Last updated: 16 September 2026

Battery and charging

Voltage: 38.4 V nominal, sold as a 36 V pack
Rated charge cycles: 4,000+ cycles
Nominal capacity: 50 Ah
Charging voltage: 42.6–43.2 V bulk, float off or 40.0–40.8 V
Maximum continuous discharge: 100 A continuous, 130 A for ten seconds
Peak discharge: 130 A for ten seconds
Energy as stated: 1.92 kWh
Working voltage range: Works between 30.0 V and 43.8 V

Battery care and safety

Ingress protection: IP65
Temperature the cells themselves charge at: The cells themselves only charge from 0 °C
Temperatures it may be charged in: Takes charge to −20 °C because it heats itself
Temperature it reconnects at: Reconnects at 50 °C after a high-temperature cut

Size and fit

Overall dimensions: 13.0 × 6.8 × 9.44 in
Group the maker sells it as: Group 31 footprint — but check the measurements
Series and parallel connection: It may not be put in series at all
Terminals: M8 female terminals
Weight as stated: 35 lb (15.9 kg)

Identity

Model code: SKU 3650A-H

Compatible chargers

12V & 36V Onboard Marine Lithium Battery ChargerSKU CHG-2BAY-12V36VM8 ring terminalsManufacturer documented
Epoch's own charger and Epoch's own pack. Bank two of this unit is 36 V at 10 A and Epoch state it takes a "Compatible 36V LiFePO4 battery only" — this pack is 36 V LiFePO4 and theirs. IT NAMES A CLASS AND NOT THIS MODEL, so the row is exactly as specific as Epoch were: it establishes the pack is inside the description bank two gives, not that they tested this pairing. CHARGING AND DISCHARGING ARE DIFFERENT QUESTIONS: ten amps in, against the 100 A continuous this pack can deliver. A bank that charges slowly is not a bank that runs slowly, and this catalogue now holds both figures.
12V to 36V Marine DC-to-DC ChargerSKU CHG-DC-36V36V output10AOutput ring terminalsManufacturer documented
Epoch's own DC-to-DC charger and Epoch's own pack. The unit's output is "One compatible 36V auxiliary battery" with selectable types including 36 V LiFePO4, which this pack is. A CLASS, NOT THIS MODEL: Epoch name a voltage and a chemistry rather than a SKU, so the row is as specific as they were. AND IT CHARGES SLOWLY BY DESIGN: 10 A into a 100 Ah pack is a long run of the engine, which is the point of a charge-on-the-run device rather than a limitation of it.

United States — CPSC

We did not match this product to any recall in the data we hold from CPSC, last checked September 19, 2026. Check CPSC’s own search: cpsc.gov/Recalls

United States — NHTSA & Coast Guard

We did not match this product to any recall in the data we hold from NHTSA or the US Coast Guard, which we hold records from but do not yet check on a schedule. Check NHTSA’s own search: nhtsa.gov/recalls

European Union

We did not match this product to any recall in the data we hold from the European Union, last checked September 19, 2026. Check the European Union’s own search: ec.europa.eu/safety-gate-alerts/screen/search

United Kingdom

We did not match this product to any recall in the data we hold from the United Kingdom, last checked September 19, 2026. Check the United Kingdom’s own search: gov.uk/product-safety-alerts-reports-recalls

Australia

We did not match this product to any recall in the data we hold from Australia, last checked September 14, 2026. Check Australia’s own search: productsafety.gov.au/recalls

Canada

We did not match this product to any recall in the data we hold from Canada, last checked September 19, 2026. Check Canada’s own search: recalls-rappels.canada.ca/en/search

France

We did not match this product to any recall in the data we hold from France, last checked September 19, 2026. Check France’s own search: rappel.conso.gouv.fr

None of these is a statement that the product is safe or unrecalled — only that our searches found nothing. Each regulator’s own search is linked above.

Devices documented to run on this

The figures below line up. Neither manufacturer states that this pack runs this device — that is our reading of what each of them published separately, not a claim by either of them or a test by us. Even where every stated figure agrees, these can still decide it:

A motor’s published draw is usually a peak, not the load it holds — the two numbers are not the same kind of quantity
A maker’s amp-hour minimum and their reserve-capacity minimum can give different answers about the same battery
Conditions attached to the chemistry, such as a speed limit for running on lithium
Whether the pack may be wired in series at all, where the device needs 24 or 36 volts
The charger, which both makers put conditions on and neither supplies
Case size, hold-down and terminal type — fitting the space is not being secured in it

Worth confirming with the manufacturer or a dealer before buying.

Garmin Force Kraken (20–45 V, 48" to 110" shafts)Figures compared
One of these, on its own, at 36 V.
Only at 36 volts, and on published figures — neither maker has named the other and nobody has tested this pairing — check yours before buying.
The motor's maker asks for 100 Ah minimum for a lead-acid or AGM battery, and 50 Ah to 100 Ah where the battery is lithium, and the battery must be able to supply 60 A of continuous current. This pack is rated 50 Ah and 100 A continuous.
Garmin Force Pro (20–45 V, 50" and 57" shafts, brushless)Figures compared
One of these, on its own, at 36 V.
Only at 36 volts, and on published figures — neither maker has named the other and nobody has tested this pairing — check yours before buying.
The motor's maker asks for 100 Ah minimum for a lead-acid or AGM battery, and 50 Ah to 100 Ah where the battery is lithium, and the battery must be able to supply 60 A of continuous current. This pack is rated 50 Ah and 100 A continuous.
Garmin Force (20–45 V, 50" and 57" shafts)Figures compared
One of these, on its own, at 36 V.
Only at 36 volts, and on published figures — neither maker has named the other and nobody has tested this pairing — check yours before buying.
The motor's maker asks for 100 Ah minimum for a lead-acid or AGM battery, and 50 Ah to 100 Ah where the battery is lithium, and the battery must be able to supply 60 A of continuous current. This pack is rated 50 Ah and 100 A continuous.
Minn Kota Terrova 112 lb (60" shaft, CHIRP sonar, wireless remote)Figures compared
One of these.
Only at 36 volts, where Minn Kota rate this motor at 52 A and Epoch rate this pack at 100 A continuous — check yours before buying.
Minn Kota state this 112 lb motor runs on a 36 volt system and draws up to 52 A. Epoch state this pack is 38.4 V with a maximum continuous discharge of 100 A, leaving 48 A of headroom. Neither company has named the other, and the two figures are different kinds of number: Minn Kota's is a peak draw, Epoch's is a continuous rating. The comparison therefore runs the cautious way round, since a pack that can supply its figure indefinitely covers a motor's worst moment; read the other way it would mean nothing. Epoch do publish this pack in a collection titled "Lithium Batteries for Minn Kota Trolling Motors", which names the motor brand but no model.
Minn Kota Terrova QUEST 90/115 lb (45" shaft, CHIRP sonar, wireless remote)Figures compared
One of these.
Only at 36 volts, where Minn Kota rate this motor at 58 A and Epoch rate this pack at 100 A continuous — check yours before buying.
Minn Kota state this 115 lb motor runs on a 36 volt system and draws up to 58 A. Epoch state this pack is 38.4 V with a maximum continuous discharge of 100 A, leaving 42 A of headroom. Neither company has named the other, and the two figures are different kinds of number: Minn Kota's is a peak draw, Epoch's is a continuous rating. The comparison therefore runs the cautious way round, since a pack that can supply its figure indefinitely covers a motor's worst moment; read the other way it would mean nothing. Epoch do publish this pack in a collection titled "Lithium Batteries for Minn Kota Trolling Motors", which names the motor brand but no model.

Compatible platforms

The motors this pack is documented to run are listed above. No boat, rig or other platform in this catalogue is listed as carrying it — that is a separate question from what it will power, and nothing is listed until a source answers it.

Do not charge with

The manufacturer states these chargers must not be used with this battery:

24V 15A Lithium Battery ChargerStated incompatible

Sources

Epoch Batteries — Lithium Batteries for Minn Kota Trolling MotorsMANUFACTURER BATTERY PAGE
Epoch Batteries
Source: epochbatteries.com/collections/lithium-marine-batteries/lithium-batteries-for-minn-kota-trolling-motors
Verified September 15, 2026