Smart ANT BMS 8S-20S 275A

Smart ANT BMS is an intelligent 8S-20S battery management system with active balancing for high power Li-ion/LiFePO₄ packs. The BMS provides discharge, overcharge and short-circuit protection, real-time monitoring and stable operation at high currents: 120 A constant and up to 275 A instantaneous.

Key benefits

• Active balancing – faster cell alignment, increased capacity and durability.
• High currents – up to 120 A DC, up to 275 A peak.
• Full protection – overload/overload, short circuit, temperature.
• Wide compatibility – works with 8S-20S configurations (Li-ion / LiFePO₄).
• Smart monitoring – control/telemetry functions supported*.

* Specific communication functions depend on the BMS version (ANT/BT application, UART, etc.).

Compatibility

• Chemistry: Li-ion (NMC/NCA), LiFePO₄ (LFP)
• Configuration: 8S-20S (selectable number of S per package)
• Applications: e-bikes, e-motorcycles, scooters, go-karts, industrial 36-48-72-84 V-packs etc.

Specifications

• Active balancing: available (high efficiency energy transfer between cells)
• Currents: 120 A constant / 275 A instantaneous (transient)
• Protection: discharge, overload, short circuit, temperature (NTC)
• Cells: 8-20 in series (S), B- / C-
• Control/telemetry: BT

Installation guidelines

• Choose the correct number of S (e.g. 13S=48 V, 16S=60 V, 20S=72 V class).
• Use wires of appropriate cross-section (8 AWG and larger for high currents).
• Connect the balancing wires exactly according to the sequence of cells (B-, B1, B2 …).
• Ensure heat removal and ventilation, and orderly routing of cables.
• The first start-up should be carried out with a fuse and current/voltage control.

FAQ

Is it suitable for a 72 V (20S) system?
Yes, this model supports 8S-20S, so it is also suitable for 20S (≈72 V) packs (Li-ion/LFP).

How is active balancing better than passive balancing?
Active balancing moves energy between cells rather than burning it in the heat – smoothing and preserving Wh faster.

Can I use it with powerful controllers (BAC, KO, EBMX)?
Yes – it is important that the current limits do not exceed the BMS specification.

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