Practical selection guide for Jiabaida (JBD)–class smart BMS boards used on DIY and OEM LiFePO4 packs. BattCrate coordinates supply of these boards and is not a JBD authorized agent. Board revision and options are confirmed per quotation.
1. Match series count first
| Pack | BMS series | BattCrate examples |
|---|---|---|
| 12.8 V (4S) | 4S | BC-BMS-001 (150A + heating + BT), BC-BMS-002 (100A + BT) |
| 25.6 V (8S) | 8S config of multi-S board | BC-BMS-003 |
| 51.2 V (16S) | 16S | BC-BMS-004 (UART/RS485/CAN + heating; no Bluetooth — heating confirmed per version), BC-BMS-005 (BT + UART) |
A board family that “supports 5–16S” still needs the configured series for your pack — state 8S or 16S explicitly in the RFQ.
2. Continuous current vs inverter / load
- Size continuous current to the sustained discharge (and charge) you expect, not only the inverter nameplate peak.
- Peak / pulse ratings (when published) are short-duration; do not treat them as continuous.
- If the maker peak table is not in the public manual for that version, we leave peak blank and confirm on quote — we do not invent amps.
3. Heating, Bluetooth, and low-temp charge
| Feature | What it means for buyers |
|---|---|
| Heating support | Board has a heating-film interface; film is usually separate and matched to the pack. Useful for cold-climate charging. |
| Bluetooth | App monitoring (e.g. Xiaoxiang Electric). Confirm module is included for the exact version quoted. |
| Low-temp charge protection | Stops charge below a threshold even if heating is absent. Confirm whether your board version includes it. |
Heating and low-temp protection are related but not the same — ask for both in the RFQ if the pack will sit outdoors in winter.
4. Communication and inverter link
- DIY / app-centric builds: UART + Bluetooth is often enough (DP04S007 / SP16S020 class).
- Inverter-linked home storage: prefer boards with RS485 / CAN and confirm protocol against the buyer’s inverter model (UP16S010 class).
- Isolated RS485 and heating are often options on the same family — inclusion is stated in the quotation.
5. Weak-signal / switch and protection basics
Confirm in the RFQ (not assumed from a photo):
- Common port vs separate charge/discharge port
- External NTC count and placement
- Passive balancing current range
- Overcurrent / short-circuit behaviour
Request a quotation
Use the product code in the contact form:
- /contact/?product=BC-BMS-001
- /contact/?product=BC-BMS-002
- /contact/?product=BC-BMS-003
- /contact/?product=BC-BMS-004
- /contact/?product=BC-BMS-005
Datasheets accompany quotations only.