70A Smart BMS for 9–17S 12V–48V Li-ion/LiFePO4 Battery Packs with UART, Bluetooth & Precharge Function
Koxin specializes in custom lithium battery packs, coin cell & polymer Li-ion batteries, and smart BMS solutions. We provide small-scale, niche battery products with reliable quality and OEM customization.
Custom BMS · LFP Battery Circuit Board · NMC Battery Circuit Board · Smart BMS
Inquire about this productProduct details
| ltem | PCM-L17S70-M78（NCM） | PCM-L17S70-M78（LiFePO4） |
| Max continious current | 70A | 70A |
| Internal resistance | ≤5mΩ | ≤5mΩ |
| Overcharge protection voltage | 4.25±0.1V | 3.75±0.1V |
| Overcharge protection delay time | 0.5-2S | 0.5-2S |
| Overcharge recovery voltage | 4.10±0.1V | 3.50±0.1V |
| Overdischarge protection voltage | 2.80±0.1V | 2.80±0.1V |
| Overdischarge protection delay time | 0.5-2S | 0.5-2S |
| Overdischarge recovery voltage | 3.00±0.1V | 3.00±0.1V |
| Balance Start Voltage | 4.2±0.1V | 3.6±0.1V |
| Balance Start Current | 68±10mA | 58±10mA |
| Charging Overcurrent Protection | 80±10A (Delay 1S) | |
| Short circuit Overcurrent Protection | 200±30A (≤64 uS) | |
| Over-Temperature Protection | 60±3℃(Delay 1S) | |
| Charging Low-Temperature Protection | ‘-10±3℃(Delay 1S) | |
| Discharging Low-Temperature Protection | -20±3℃(Delay 1S) | |
| Mos temperature | 90±3℃ | |
| Short circuit protection | YES | |
| Recovery state | Disconnect load or Software rest | |
| Balancing Function | YES | |
| Dimension | 125*63*15mm | |
| With NTC | YES | |
| With Bluetooth | YES | |
| With Pre-charge, Pre-discharge Function | YES | |
| RS485/CAN/UART | YES | |
| Customize | YES | |
Product Features:
1-Built-in adaptive intelligent algorithm, combined with an integrated coulomb counter, enables more accurate State of Charge (SOC) estimation.
2-Provides multiple protection functions, including overcharge, over-discharge, overcurrent, short circuit, and temperature protection.
3-Supports multiple sleep and wake-up modes, and communicates with PC via UART for parameter configuration and data monitoring through host software.
4-External thermistors (103AT) can be used to set charging/discharging temperature thresholds and report real-time data to the host.
5-Features voltage balancing during charging and temperature protection functions.
6-Supports pre-discharge function, making it more suitable for applications such as inverters and similar equipment.
7-Compatible with the Bluetooth app to read battery pack parameters including current, voltage, capacity, temperature, cycle count, and SOC.
8-Under ambient temperature of 30°C, the system can continuously discharge 200A for over one hour, with MOSFET temperature remaining below 100°C.