Electronic Spices FHJY
Electronic Spices 4S 20A 14.8V 18650 Li-ion Lithium Battery Protection and Charger BMS Module User Manual
Model: FHJY
1. Introducció
This manual provides essential information for the safe and effective use of the Electronic Spices 4S 20A 14.8V 18650 Li-ion Lithium Battery Protection and Charger BMS Module. This module is designed to manage and protect 4-series (4S) Li-ion battery packs, ensuring their longevity and safe operation. Please read this manual thoroughly before installation and operation.

Figura 1: Frontal view of the Electronic Spices 4S 20A BMS Module, showing components and connection points.
2. Característiques clau
The Electronic Spices 4S 20A BMS Module offers the following protective and management features:
- Vol. De càrregatage: DC 14.8V
- Consum actual: 20A
- Detecció de sobrecàrrega Voltage: 3.90V ± 0.25V per cell
- Overcharge Release Voltage: 3.80V ± 0.05V per cell
- Over-discharge Detection Voltage Rang: 2.0V ± 0.08V per cell
- Protecció contra curtcircuits: Automatically disconnects output in case of a short circuit.
- Protecció contra sobreintensitat: Evita danys per un consum excessiu de corrent.
- Equilibri cel·lular: Helps maintain equal voltage across all cells in the pack for optimal performance.
3. Configuració i cablejat
Proper wiring is crucial for the safe and correct operation of the BMS module. Refer to the diagram below for connection details. Always ensure power is disconnected before making any connections.
- Connect B- to the negative terminal of the first battery cell (B1-).
- Connecteu B1 to the positive terminal of the first cell and the negative terminal of the second cell.
- Connecteu B2 to the positive terminal of the second cell and the negative terminal of the third cell.
- Connecteu B3 to the positive terminal of the third cell and the negative terminal of the fourth cell.
- Connect B+ to the positive terminal of the fourth battery cell (B4+).
- Connect P- to the negative terminal of your load/charger.
- Connect P+ to the positive terminal of your load/charger.
Nota: Ensure all connections are secure and insulated to prevent short circuits. Incorrect wiring can damage the BMS, batteries, or connected devices.

Figura 2: superior view of the BMS module, illustrating the various connection pads for battery cells and power output.

Figura 3: A baix view of the BMS module, showing voltage markings and model number HX-4S-A20 REV 1.1.
4. Instruccions de funcionament
Once properly wired, the BMS module will automatically manage the charging and discharging of your 4S Li-ion battery pack. It provides protection against common battery issues.
- Càrrega: Connect a compatible 14.8V (or slightly higher, up to 16.8V for full charge) Li-ion charger to the P+ and P- terminals. The BMS will manage the charging process, preventing overcharge.
- Descàrrega: Connect your load to the P+ and P- terminals. The BMS will monitor the discharge, preventing over-discharge and overcurrent.
- Activació de la protecció: If any protection threshold (overcharge, over-discharge, overcurrent, short circuit) is met, the BMS will temporarily cut off the output to protect the batteries.
- Recuperació: Most protection states will automatically reset once the fault condition is removed (e.g., removing the short circuit, connecting a charger after over-discharge).
5. Manteniment
The Electronic Spices BMS module is designed for low maintenance. However, following these guidelines can help ensure optimal performance and longevity:
- Inspecció periòdica: Periodically check all wiring connections for looseness or corrosion.
- Neteja: Keep the module free from dust, dirt, and moisture. Use a soft, dry cloth for cleaning.
- Condicions ambientals: Operate the module within its specified temperature and humidity ranges. Avoid extreme temperatures.
- Salut de la bateria: Ensure the individual 18650 cells used with the BMS are in good condition and are of similar capacity and internal resistance for best performance.
6. Solució De Problemes
If you encounter issues with your BMS module, consider the following troubleshooting steps:
| Problema | Causa possible | Solució |
|---|---|---|
| Sense sortida voltage from P+ and P- |
|
|
| BMS gets hot during operation |
|
|
| Batteries not charging fully |
|
|
7. Especificacions
Detailed technical specifications for the Electronic Spices 4S 20A 14.8V 18650 Li-ion Lithium Battery Protection and Charger BMS Module:
- Marca: Espècies electròniques
- Número de model: FHJY
- Tipus de bateria: 4S Li-ion (18650 cells recommended)
- Volum nominaltage: 14.8V (for 4S Li-ion)
- Vol. De càrregatage: DC 14.8V (up to 16.8V for full charge)
- Corrent de descàrrega contínua màxima: 20A
- Detecció de sobrecàrrega Voltage: 3.90V ± 0.25V
- Overcharge Release Voltage: 3.80V ± 0.05V
- Over-discharge Detection Voltage: 2.0V ± 0.08V
- Protecció contra curtcircuits: Sí
- Protecció contra sobreintensitat: Sí
- Dimensions: Approximately 13 x 13 x 8 cm (packaged)
- Pes de l'article: 200 g (packaged)
- País d'origen: Índia
Nota: The physical dimensions and weight provided are for the packaged product. The module itself is compact.
8. Producte acabatview Vídeo
Mireu aquest vídeo per obtenir una visió generalview of the Electronic Spices BMS Module, demonstrating its physical characteristics and potential applications.
Vídeo 1: Un breu resumview of the Electronic Spices BMS Module, highlighting its compact design and key features for battery management.
9. Garantia i Suport
Specific warranty information for this product is not provided in the available documentation. For technical support or warranty inquiries, please contact Electronic Spices directly through their official channels or the retailer from whom the product was purchased.
Informació de contacte del fabricant:
Espècies electròniquesMain, Ismailpur Rd, near Gyan Mandir Chowk, F- Block, Jaitpur, New Delhi, Haryana 110044
Telèfon: 8929992403
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