Overview
ANT Smart BMS battery protection board for 21S-30S battery packs, for Li-ion, LiFePO4, and LTO chemistries. Available current ratings include 170A, 230A/220A, 380A, 400A, and 420A, with peak discharge capability depending on the version. Built-in Bluetooth supports Android and iOS monitoring.
Key Features
- Battery strings: 30S (product family marked for 20S-30S on the specification sheet)
- Power supply mode: self-powered by the battery pack; supports 20-150V DC input
- Built-in Bluetooth; supports Android / iOS phone
- Short circuit protection: supported
- Wiring method: same port
- Passive balancing: 100mA balance current
- Single-cell voltage detection range: 0-5V; error <20mV over full operating range; typical error <10mV
- Supports single-cell voltage dropout detection
- Total voltage detection range: 0-150V; <0.5% FSR (FSR = full scale)
- Current sense shunt: -150A to 300A; error <0.5% FSR
- SoC estimation accuracy: error <8% (operating conditions)
- Battery remaining capacity error range: <8%
- Total Cycle Ah cumulative value is half of the charge/discharge value
- Operating power consumption: <5mA (without communication) / 15mA (485/CAN)
- Standby power consumption: <2mA
- Temperature detection: -40 to 125°C
- Operating temperature: -40 to 85°C; storing temperature: -40 to 95°C
- Some versions support customized positioning holes (per specification sheet)
Specifications
Current ratings, peak discharge, and dimensions (from provided description)
| Continuous current | 170A |
| Maximum discharge current (peak max 10 seconds) | 425A |
| Dimensions (L x W x H) | 16.2cm x 11.1cm x 1.6cm |
| Continuous current | 220A |
| Maximum discharge current (peak max 10 seconds) | 550A |
| Dimensions (L x W x H) | 19cm x 11.1cm x 1.6cm |
| Continuous current | 400A |
| Maximum discharge current (peak max 10 seconds) | 1000A |
| Dimensions (L x W x H) | 18.5cm x 11.1cm x 1.6cm |
| Continuous current | 420A |
| Maximum discharge current (peak max 10 seconds) | 1050A |
| Dimensions (L x W x H) | 20.5cm x 11.1cm x 1.6cm |
Mechanical reference (from specification sheet; data tolerance range: ±1mm)
| Version marking | Current rating | Peak | Key dimensions shown |
| 20S-30S | 170A continuous | Peak 425A | 111mm (top width); 162mm (height); 72.5mm (bottom width); cable length 150mm; 110mm (internal marking) |
| 20S-30S | 230A continuous | Peak 575A | 111mm (top width); 190mm (height); 67mm (bottom width); cable length 150mm; 140mm (internal marking) |
| 20S-30S | 380A continuous | Peak 950A | 111mm (top width); 185mm (left height); 134mm (right height); 92mm (bottom width) |
What’s Included
- 4 x NTC temperature sensors (35cm)
- Active switch cable (40cm)
- Battery cable (70cm)
Applications
- High-voltage LiFePO4, Li-ion, or LTO battery packs (21S-30S) requiring smart monitoring and protection
- Energy storage and DC power battery systems needing Bluetooth monitoring and optional 485/CAN communication
For pre-sales compatibility checks (strings, current rating, and wiring) or after-sales support, contact service@tsolar.top.
Details
Choose the right 20S–30S ANT Smart BMS version by continuous/peak current and size, with accessory options listed for wiring and temperature sensing.
