JK BMS · 0.4–1 A Active Balance · Consumer
JK BMS 0.4–1A for Consumer LiFePO4 Battery Packs
Entry-tier JK BMS with 0.4 A, 0.6 A and 1 A active balancing for consumer LiFePO4 packs – e-bikes, portable power, and small ESS. Bluetooth, CAN/RS485.
Snapshot
Balance Current
0.4–1 A
Continuous Current
40–200 A
Strings
3S–24S
Communication
CAN/RS485/BT
Overview
Entry-Tier Active Balance BMS
Light active balancing for consumer battery products – e-mobility, portable power, small storage – where cost and footprint matter as much as protection.
Situation
Your e-bike, portable power station, scooter, or small home ESS needs a BMS with light active balancing that protects pack health without the cost of high-current balancing hardware.
The Challenge
Consumer packs are price-sensitive, yet passive balancing wastes energy as heat and fails to correct imbalance in daily use. Oversized high-current BMS adds cost and footprint a consumer product cannot absorb.
How do you choose a 0.4–1 A active balance BMS for a consumer LiFePO4 pack that protects battery life at a consumer-friendly price point?
Our Answer
SSLBATT JK BMS 0.4–1 A series covers consumer LiFePO4 packs with 0.4 A (BD4A), 0.6 A (BD6A) and 1 A (B1A) active balancing across 3S–24S. Energy-transfer balancing corrects imbalance without heat waste; Bluetooth, CAN/RS485 and optional GPS provide consumer monitoring at an entry price point.
0.4A / 0.6A / 1A Balance Tiers
Three JK BMS tiers match balance current to pack capacity and duty cycle without over-spending.
Bluetooth Consumer Monitoring
Bluetooth app monitoring for Android/iOS, CAN/RS485 device integration, and optional GPS.
Multi-Chemistry Support
LiFePO4, Li-ion, LTO, lithium manganate and lithium cobalt – not limited to iron phosphate.
Where It Fits Best
View specifications
| Application | Why it fits |
|---|---|
| E-mobility | 0.6–1 A balancing for e-bikes and scooters with daily charge cycles. |
| Portable power | Bluetooth monitoring for portable power stations. |
| Small home ESS | CAN/RS485 integration with compact solar storage. |
| Consumer devices | Light balancing for tool and lawn equipment packs. |
JK BMS 0.4–1A Model Matrix
BD4A (0.4A), BD6A (0.6A) and B1A (1A) models from the JIKONG selection guide.
View specifications
| Model | Balance Current | Continuous Current | Max Current | LiFePO4 Strings | Li-ion Strings | LTO Strings | Main Loop Resistance | OCP Adjustable |
|---|---|---|---|---|---|---|---|---|
| BD4A 8S4P | 0.4 A | 40 A | 60 A | 4S–8S | 3S–8S | 6S–8S | 2.8 mΩ | 10–40 A |
| BD6A 20S6P | 0.6 A | 60 A | 100 A | 8S–20S | 20S | 12S–20S | 1.53 mΩ | 10–60 A |
| BD6A 24S6P | 0.6 A | 60 A | 100 A | 8S–24S | 24S | 12S–24S | 1.53 mΩ | 10–60 A |
| BD8A 20S8P | 0.6 A* | 80 A | 150 A | 8S–20S | 20S | 12S–20S | 1.3 mΩ | 10–80 A |
| B1A 20S15P | 1 A | 150 A | 300 A | 8S–20S | 7S–20S | 12S–20S | 0.65 mΩ | 10–150 A |
| B1A 8S10P | 1 A | 100 A | 200 A | 4S–8S | 3S–8S | 6S–8S | 0.65 mΩ | 10–100 A |
| B1A 8S20P | 1 A | 200 A | 350 A | 4S–8S | 3S–8S | 6S–8S | 0.47 mΩ | 10–200 A |
Specifying Your Entry BMS
Match balance current and string count to your consumer pack.
View specifications
| Design item | Why it matters |
|---|---|
| Balance current (0.4–1 A) | 0.4 A for small packs; 0.6–1 A for daily-use e-mobility and portable power. |
| String count (3S–24S) | Determines nominal voltage – verify cell count before ordering. |
| Communication | Bluetooth for consumer app; CAN/RS485 for device integration; optional GPS. |
Choosing the Right Balance Tier
View specifications
| Balance current | Recommended use |
|---|---|
| 0.4 A | Small packs up to ~100 Ah with light duty cycles. |
| 0.6 A | Mid-size packs and daily-use consumer devices. |
| 1 A | Packs above ~150 Ah or higher-cycle consumer applications. |
Specifications
Common Technical Specifications
Shared across the 0.4–1 A series.
Balance Mode
Active Balance
Voltage Range
1–5 V per cell
Voltage Accuracy
±5 mV
Communication
CAN / RS485 / Bluetooth
Protection
OVP / UVP / SCP / OCP / NTC
Dimensions
110 × 73 × 18 mm / 136 × 83 × 17.6 mm
Power Supply
20–100 V DC
OCP Range
10–80 A
Standby Draw
6 mA unbalanced / 10 mA balancing @ 100 V
Safety Layer
BMS & Safety
Consumer-grade protection for daily-use battery products.
Overcharge Protection
Per-cell voltage ceiling enforcement.
Over-discharge Cutoff
Programmable low-voltage disconnect.
Over-current Protection
Dual-threshold response to spikes and shorts.
Temperature Protection
NTC-based monitoring with programmable limits.
System Communication
Inverter & Motor Controller Communication
How the BMS talks to the device depends on the application: storage packs talk to inverters (Victron, Deye, Growatt…) over CAN/RS485, while e-mobility packs talk to the controller. We map the protocol to your device before sampling.
Visual Context
Engineering Visuals
Where It Wins
Applications
Match this series to consumer battery products.
E-Mobility
E-bikes, scooters, and small electric vehicles with light balancing.
Portable Power
Portable power stations with Bluetooth monitoring.
Small Home ESS
Compact solar storage with CAN/RS485 integration.
Consumer Packs
Tool batteries, lawn equipment, and consumer devices.
FAQ
Frequently Asked Questions
What balance currents are available in this series?
What balance currents are available in this series?
Which battery chemistries are supported?
Which battery chemistries are supported?
What string configurations are supported?
What string configurations are supported?
What monitoring options are available?
What monitoring options are available?
Real Photos
Factory & Product Gallery
Request Quote
Request OEM Quote
Factory-direct pricing for JK BMS 0.4–1A orders. Share your pack configuration and target current for a 24-hour engineering fit check.
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