12.8V 100Ah Trolling Motor Smart (100A BMS)
LiTime 12V 100Ah TM Bluetooth LiFePO4 wiring diagram
12.8V 100Ah deep-cycle battery with Bluetooth, 100A continuous charge/discharge limits and low-temperature charge cutoff. Recommended charging is 20A at 14.4V ±0.2V. This TM model is not an engine-starting battery or the TM Plus variant.
- Nominal voltage
- 12.8 V
- Capacity
- 100 Ah
- Maximum discharge
- 100 A
Wiring diagram
How the TM Bluetooth 100Ah is wired.
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Cable sizing for this example
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Installation notes
Before you install.
Open a question for model-specific guidance and sources.
Verified against the manufacturer's documentation (rev. 12.8V 100Ah Trolling Motor Smart, 100A BMS; undated 8-page manual), checked 2026-10-01. Manufacturer documentation →
Which battery is this?
This is LiTime’s 12.8 V 100 Ah TM Bluetooth deep-cycle model, with a 100 A continuous charge/discharge limit. It is separate from the TM Plus and starting-battery ranges. The manufacturer product page identifies it for trolling motors and house loads, expressly excluding engine starting.
How are the connections made?
The two posts are the complete power interface; Bluetooth requires no external communications cable. Manual pages 2–4 identify M8 × 1.25 terminals and 12–14 Nm tightening torque. Secure the case against movement, seat the cable lugs flat and replace the insulating caps. Provide external battery-cable protection: the internal BMS is not a cable fuse.
How should it charge?
Use a LiFePO4 profile at 14.4 V ±0.2 V. The recommended current is 20 A, distinct from the 100 A maximum. Add the outputs of all chargers before checking that limit. Never use lead-acid equalization or desulfation settings on this battery.
What happens in cold weather or under overload?
Charging is blocked below 0°C and resumes after the cells warm above 5°C; this model does not heat itself. The documented one-second surge is a temporary BMS capability, not a continuous wiring rating. If output disappears, remove the fault or excessive load, inspect battery status in the app, and follow the manual’s recovery procedure rather than repeatedly reconnecting an overloaded inverter.
Technical reference
Specifications and terminal map.
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Catalog specification
12.8V 100Ah deep-cycle battery with Bluetooth, 100A continuous charge/discharge limits and low-temperature charge cutoff. Recommended charging is 20A at 14.4V ±0.2V. This TM model is not an engine-starting battery or the TM Plus variant.
- Nominal voltage
- 12.8 V
- Capacity
- 100 Ah
- Maximum discharge
- 100 A
Terminal map
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
+
positive · bidi
−
negative · bidi
Sources and sizing method
Equipment specifications. Model details, ratings and terminal roles come from the catalog. Check your unit’s label and current manufacturer documentation for its exact revision.
Example sizing. Cable labels apply to the connected example, not a fixed cable size for this component. Set your actual equipment, current, lengths and installation conditions in Crimp before choosing hardware.
Read how the sizing worksNext step
Plan your installation with TM Bluetooth 100Ah.
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