JK Active Balancer · 0.1–10A
JK Active Balancer 0.1–10A for LiFePO4 and Multi-Chemistry Packs
Standalone energy-transfer balancers from 0.1 A to 10 A – recover imbalanced packs, upgrade passive-balance systems, and cascade beyond 24 strings. Bluetooth monitoring on every model.
Key Specifications
Balance Current
0.1–10 A
Strings
4S–24S, cascade 24S+
Communication
Bluetooth / CAN / RS485
Chemistry
LiFePO4 / Li-ion / LTO
Overview
Standalone Active Balancing for Every Pack
Energy-transfer balancing for packs of any chemistry – a standalone add-on that works alongside your existing BMS. Standard models cover compact packs; 5A and 10A models handle high-capacity storage and cascade systems.
Situation
Your battery pack shows capacity divergence, or your passive-balance BMS cannot keep cells equal – and you need a standalone balancer that recovers usable capacity without replacing the whole BMS.
The Challenge
Passive balancing burns energy as heat and struggles with high-capacity packs. Replacing a working BMS to gain active balancing is expensive, and an imbalanced pack silently loses capacity and shortens service life.
How do you recover an imbalanced LiFePO4 pack with a standalone active balancer that scales beyond 24 strings?
Our Answer
SSLBATT JK Active Balancer uses energy-transfer balancing from 0.1 A to 10 A, independent of cell voltage difference. Standard models cover 4S–24S; 5A and 10A models add cascade beyond 24 strings (theoretically unlimited), with Bluetooth app monitoring on every model and CAN/RS485 on cascade editions.
Energy-Transfer Balancing
Charge moves between cells instead of burning as heat, with balancing current set independently of pack voltage difference.
Cascade Beyond 24S
5A and 10A models support balanced cascade beyond 24 strings – theoretically unlimited pack sizes.
Multi-Chemistry
Works with LiFePO4, Li-ion, LTO, lead-acid, and supercapacitor packs – not limited to iron phosphate.
Where the JK Active Balancer Fits
View specifications
| Application | Why it fits |
|---|---|
| Degraded pack recovery | Restore usable capacity in fielded packs showing divergence. |
| Battery factory maintenance | Balance new packs during formation and testing. |
| Passive-BMS upgrade | Add active balancing to existing passive-balance systems. |
| High-capacity ESS | Cascade 5A/10A balancers across large storage systems. |
JK Active Balancer Model Matrix
Standard, 5A and 10A tiers from the JIKONG selection guide.
View specifications
| Model | Balance Current | Strings | Cascade | Communication |
|---|---|---|---|---|
| B2A4S | 0.1–2A, adjustable | 4S | — | — |
| B1A16S | 0.1–1A, adjustable | 2S–16S | — | — |
| B2A16S | 0.1–2A, adjustable | 2S–16S | — | — |
| B1A24S | 0.1–1A, adjustable | 2S–24S | — | Bluetooth |
| B2A24S | 0.1–2A, adjustable | 2S–24S | — | Bluetooth |
| DZ08-B1A24S | 0.1–1A, adjustable | 2S–24S | 24S+ | CANBUS |
| DZ11-B1A24S | 0.1–1A, adjustable | 2S–24S | 24S+ | RS485 |
| DZ08-B2A24S | 0.1–2A, adjustable | 2S–24S | 24S+ | CANBUS |
| DZ11-B2A24S | 0.1–2A, adjustable | 2S–24S | 24S+ | RS485 |
| 5A Smart Balancer | 0.8–5A | 4S–24S | 24S+ | Bluetooth |
| 10A Smart Balancer | 0.8–10A | 12S–24S | 24S+ | Bluetooth |
Specifying Your Balancer
Match balancing current and strings to your pack.
View specifications
| Design item | Why it matters |
|---|---|
| Balance current | 0.1–2A for compact packs; 5A/10A for high-capacity or cascade systems. |
| String count | Standard covers 4S–24S; 5A/10A add cascade beyond 24S. |
| Communication | Bluetooth for app monitoring; CAN/RS485 on cascade editions. |
Choosing the Right Balancer Tier
View specifications
| Tier | Balance Current | Recommended use |
|---|---|---|
| Standard | 0.1–2A | |
| 5A | 0.8–5A | |
| 10A | 0.8–10A |
Specifications
Common Technical Specifications
Shared across the JK Active Balancer series.
Balance Mode
Energy-transfer active
Voltage Range
1–5V per cell
Voltage Accuracy
±5mV
Communication
Bluetooth / CAN / RS485
Power Supply
20–100 V DC (pack self-powered or external supply)
Balance Current
0.1–10 A (model-dependent)
Strings
4S–24S (cascade 24S+)
Dimensions
153 × 136 × 17.6 mm (standard edition); 157.6 × 99 × 18.5 mm (alternate)
Operating Temp
-20 ~ +70 °C
Trigger Threshold
>4 mV default, settable
Cascade
Batteries above 24S support balanced cascade
Safety
Safety
Standalone balancing safety for service, maintenance, and pack-build environments.
Reverse-Connect Protection
Anti-back-connect protection on every model.
Auto-Start Balancing
Balancing starts automatically when voltage difference exceeds the trigger (default >4mV).
Wire Resistance Detection
Early detection of wiring errors on 5A/10A models.
Connection & Setup
How It Connects
The JK Active Balancer is a standalone board wired in parallel to the pack terminals – it needs no inverter, no BMS replacement, and no protocol mapping. Balance packs of any chemistry simply by connecting the sense wires.
Visual Context
Engineering Visuals
Where It Wins
Applications
Match this product to proven deployment contexts.
Degraded Pack Recovery
Restore usable capacity in fielded packs.
Battery Factory Maintenance
Balance new packs during formation and testing.
Passive-BMS Upgrade
Add active balancing without replacing the BMS.
High-Capacity ESS
Cascade 5A/10A balancers across large storage systems.
FAQ
Frequently Asked Questions
What is the difference between active and passive balancing?
What is the difference between active and passive balancing?
Can I use a JK Active Balancer with my existing BMS?
Can I use a JK Active Balancer with my existing BMS?
How large a pack can the 5A/10A models balance?
How large a pack can the 5A/10A models balance?
Which chemistries are supported?
Which chemistries are supported?
Real Photos
Factory & Product Gallery
Request Quote
Request a Balancer Fit Check
Share your pack configuration, capacity, and balancing requirements for a 24-hour engineering fit check.
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