TDT BMS NMC 5S 10A

TDT BMS NMC 5S 10A

Product Overview

The TDT BMS NMC 5S 10A is a compact battery management and protection board for compatible five-series NMC lithium-ion battery packs. A 5S NMC pack connects five nominal 3.7V cell groups in series, producing an 18.5V nominal battery class and a typical fully charged pack voltage around 21V depending on the cell specification. The 10A designation identifies the current class of the listed board. This makes the product relevant for compact battery packs where the expected continuous load, charge path and wiring are all matched to the exact BMS limits.

Technical Performance & Engineering Details

ARB's current listing for this TDT model identifies per-cell overcharge detection around 4.28 +/- 0.05V, over-discharge detection around 2.8 +/- 0.1V, an over-current range of 6-10A, an input range from -0.3V to +20V and a suggested operating temperature from -20C to +60C. These values should be treated as model-specific listing data rather than universal NMC limits. The battery designer still needs to confirm cell manufacturer limits, charger settings and the exact continuous-versus-protection current behavior of the board. The BMS does not increase the current capability of the cells, wires or connectors; every part of the pack must be sized for the intended load.

Compatibility & Selection Guide

Use this board only with a confirmed 5S NMC or compatible lithium-ion configuration for which the TDT board is designed. Do not substitute it for a 5S LiFePO4 BMS because LFP uses different cell-voltage limits. Verify the board connector, balance-harness order, common/separate port arrangement and whether balancing is actually present on the stocked unit. The current ARB listing describes balancing, but the physical board and datasheet should be checked before publishing a balance-current value.

Target Applications

1. 5S NMC lithium-ion battery packs

2. Compact mobility and portable power batteries

3. Battery repair and replacement projects

4. Small tools and electronics with compatible current demand

5. Battery R&D and prototype assemblies

6. Custom 18.5V-class lithium battery systems

Installation & Best Practices

Connect the five cell-tap wires in the exact sequence required by the TDT board. Before inserting the balance connector, measure each adjacent cell-group voltage and confirm the cumulative voltage rises correctly from B- toward pack positive. Use appropriately sized conductors on the charge/discharge path and keep the board insulated from conductive enclosure surfaces. During first commissioning, apply load gradually and check for abnormal heating at MOSFETs, terminals, wires and connectors.

What to Verify Before Purchase

Before ordering, verify: TDT model marking; 5S NMC chemistry; actual continuous discharge requirement; charger current; port type; balance function; balance connector and pinout; board dimensions; temperature-sensor arrangement; and enclosure space.

Why Buy from ARB Accessories?

ARB Accessories focuses on lithium-battery, EV, energy-storage and battery-pack assembly components. The catalog brings together BMS boards, connectors, insulation materials, battery boxes, wiring, cell interconnect materials, testing equipment and assembly tools. For battery builders, repair workshops and OEM buyers, sourcing related components from one specialist catalog can make specification matching and procurement easier. Final suitability should still be checked against the exact battery design, equipment model and electrical requirements before installation.