The Lithium Pros TM3165-36 is a battery pack with a nominal voltage of 36V, as the specification block states it and a nominal capacity of 65Ah, as the specification block states it.
Last updated: 16 September 2026
What we found
- Specifications are published for it, each with its source.
- 1 certification standard is cited for it: UL 1642.
- 1 figure is unconfirmed.
Battery and charging
- Voltage
- 36V, as the specification block states it
- Nominal capacity
- 65Ah, as the specification block states it
- Reserve minutes, at the maker's stated motor setting
- 155 minutes at a 50% Minn Kota setting
- Stated energy
- 2,450 Whr, which their own voltage and capacity do not give
“36V 65Ah (2,450 Whr) 155 Reserve Minutes BCI Group 31 size (13" L x 6.81" W x 8.43" T) 42.9 lbs”
Source: lithiumpros.com/products/tm3165-36-38-4v-65ah-lithium-ion-trolling-battery
“36V 65Ah (2,450 Whr) 155 Reserve Minutes BCI Group 31 size (13" L x 6.81" W x 8.43" T) 42.9 lbs”
Source: lithiumpros.com/products/tm3165-36-38-4v-65ah-lithium-ion-trolling-battery
“36V 65Ah (2,450 Whr) 155 Reserve Minutes BCI Group 31 size (13" L x 6.81" W x 8.43" T) 42.9 lbs”
Source: lithiumpros.com/products/tm3165-36-38-4v-65ah-lithium-ion-trolling-battery
Unconfirmed
“36V 65Ah (2,450 Whr) 155 Reserve Minutes BCI Group 31 size (13" L x 6.81" W x 8.43" T) 42.9 lbs”
Source: lithiumpros.com/products/tm3165-36-38-4v-65ah-lithium-ion-trolling-battery
Size and fit
- Stated weight
- 42.9 lbs, as the specification block states it
- Group the maker sells it as
- BCI Group 31
“36V 65Ah (2,450 Whr) 155 Reserve Minutes BCI Group 31 size (13" L x 6.81" W x 8.43" T) 42.9 lbs”
Source: lithiumpros.com/products/tm3165-36-38-4v-65ah-lithium-ion-trolling-battery
“155 Reserve Minutes BCI Group 31”
Source: lithiumpros.com/products/tm3165-36-38-4v-65ah-lithium-ion-trolling-battery
Battery certifications
- UL 1642Lithium BatteriesManufacturer claimIssuer: UL SolutionsLithium Pros — Trolling Batteries — lithiumpros.com/collections/trolling-batteriesView standard: Lithium Batteries →
Lithium Pros' own sentence is "Built with Lithium Iron Phosphate cells tested to the UL1642 standard". Every word of that is narrower than the mark a buyer expects to find in a specification list, in three separate ways. It is about the cells. UL 1642 covers lithium cells, not the assembled battery — the standard's subject is the cell that goes inside. A battery built from cells tested to UL 1642 is not itself certified to anything by that fact. UL 1973 and IEC 62619 are the standards that cover a finished pack, and neither is claimed anywhere on these pages. It says tested to, not certified. Those are different claims. No certificate, certificate number or issuing document is published. It names no cell supplier. Which cells, tested by whom, is not stated. None of that makes the claim false. It makes it a claim about what is inside the battery rather than about the battery, and the maker's own wording is given above so a reader can weigh it themselves.
Each standard listed is an independent claim about this specific product — one standard does not imply compliance with another.
Compatible chargers
Lithium Pros' own charger and Lithium Pros' own pack.
Their page for this charger says it is "purpose built for Lithium Pros 36V Lithium Ion Marine batteries", and this pack is one of their 36 volt batteries, which Lithium Pros rate at that voltage exactly.
They name a voltage and a family rather than a model, so this row is exactly as specific as they were: it places the pack inside the description the charger gives, and does not say the two were tested together.
It connects with alligator clips rather than being wired in.
Lithium Pros publish no recharge time for this charger — the only one of their four where they do not — saying instead that its 7 amps recharge their 36 volt batteries “with ease”. Charging and discharging are different questions: this is 7 amps going in, and Lithium Pros publish no discharge current for any of their packs, so nothing here says what the pack delivers.
The charger may not go in the boat. Lithium Pros state it "is make for dry location/shore use and does not mount in the boat" — their wording — so this pairing works at the dock and not underway. Lithium Pros put the recharge time at two and a half hours on their own 36 volt marine packs, and qualify it themselves: actual time varies by application and by how much energy was used. Charging and discharging are different questions: this is 18 amps going in, and Lithium Pros publish no discharge current for any of their packs, so nothing here says what the pack delivers.
Devices whose figures this pack does not meet
Neither maker names the other. These devices publish a draw this pack’s own maker does not rate it to deliver continuously. That is a comparison of two documents and not a manufacturer’s refusal — check both against your own equipment before deciding anything.
- Minn Kota Terrova 112 lb (60" shaft, CHIRP sonar, wireless remote)Figures compared — they do not meetView device: Minn Kota Terrova 112 lb (60" shaft, CHIRP sonar, wireless remote) →
Minn Kota ask for “at least a 105 amp-hour rating”, in a paragraph about lead-acid: “The motor will operate with any lead acid, deep cycle marine 12-volt battery/batteries. For best results, use a deep cycle, marine battery with at least a 105 amp-hour rating.” This pack is LiFePO4. For a lithium pack the same maker's thrust-to-capacity table names a different figure for this motor: “112 lb Lithium 125–150Ah 1.5–2.5 hours Heavy-duty” Those are two of Minn Kota's own numbers for two different chemistries, and an amp-hour rating does not carry from one to the other, so they are set out here rather than compared. This pack is rated 65 Ah.
Source: johnsonoutdoors.widen.net/content/zp8zgjh29h/pdf/Terrova-BT-Installation-2327132rj.pdf
Source: minnkota.johnsonoutdoors.com/us/blog/selecting-best-trolling-motor-battery
Sources
- Lithium Pros — TM3165-36Manufacturer battery page
Lithium Pros
Source: lithiumpros.com/products/tm3165-36-38-4v-65ah-lithium-ion-trolling-battery
Retrieved September 15, 2026
- Lithium Pros 1006 36V 7A chargerManufacturer model page
Source: lithiumpros.com/products/1006-36v-7a-lithium-ion-battery-charger
Retrieved September 16, 2026
- Lithium Pros 1016A 36V 18A chargerManufacturer model page
Source: lithiumpros.com/products/lithium-pros-1016-16v25a-battery-charger-with-lcd-display
Retrieved September 16, 2026
- Lithium Pros — Trolling BatteriesManufacturer website
Source: lithiumpros.com/collections/trolling-batteries
Retrieved September 15, 2026