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JK-PB2A16S20P V19 200A Smart BMS 16S with 2A Active Balancer
JK-PB2A16S20P V19 200A Smart BMS with 2A Active Balancer
The JK-PB2A16S20P V19 Smart BMS is designed for high-capacity LiFePO4 battery storage systems where reliable battery protection, active cell balancing and inverter communication are required.
With a 200A discharge rating, 2A active balancer, Bluetooth monitoring and CAN/RS485 communication, this JK inverter BMS is ideal for DIY battery builds, off-grid solar systems and home energy storage applications.
Best For: 48V LiFePO4 battery banks, DIY battery builds, off-grid solar systems, home energy storage and battery systems requiring communication with compatible hybrid inverters.
Key Features:
- 200A maximum discharge current
- 2A active cell balancing
- Bluetooth monitoring via JK BMS mobile app
- CAN communication
- RS485 communication
- RS232 communication
- Parallel battery communication support
- 10A charge current limiting function for parallel battery systems
- Overcharge and over-discharge protection
- Over-current protection
- Short-circuit protection
- High and low temperature protection
- Battery capacity and State of Charge monitoring
- PC monitoring and configuration
- LED status and SOC indicators
- Dry contact output for external alarms or control equipment
Technical Specifications:
| Specification | JK-PB2A16S20P |
|---|---|
| Model | JK-PB2A16S20P |
| Recommended Application | LiFePO4 Energy Storage Battery Systems |
| Typical Battery Configuration | 16S / 51.2V LiFePO4 |
| Maximum Discharge Current | 200A |
| Maximum Active Balance Current | 2A |
| Bluetooth | Yes – JK BMS App |
| CAN Communication | Yes |
| RS485 Communication | Yes |
| RS232 Communication | Yes |
| Parallel Communication | Yes – RS485 |
| Charge Current Limiting | 10A current limiting function |
| Temperature Detection | 4-channel battery temperature monitoring plus MOS temperature protection |
| Operating Temperature | -30°C to 70°C |
Why Choose the JK PB Series BMS?
The JK PB series is designed specifically for energy storage battery systems. In addition to protecting the battery from unsafe voltage, current and temperature conditions, the built-in 2A active balancer transfers energy between cells to help maintain more consistent cell voltages.
This is particularly useful in larger LiFePO4 battery banks where maintaining good cell balance helps support reliable operation and battery performance.
Inverter Communication:
The JK-PB2A16S20P supports CAN and RS485 communication for connection with compatible hybrid inverters and energy storage equipment.
JK documentation includes communication setup information for inverter brands including:
- Deye
- Growatt
- Victron
- Voltronic
- SRNE
- GoodWe
- MUST
Please Note: Communication compatibility can depend on the inverter model, BMS firmware and communication protocol. Always confirm compatibility with your specific inverter before ordering.
Designed for Parallel Battery Systems
The PB series includes dedicated RS485 communication for multiple battery packs. One BMS can operate as the master while additional battery packs operate as slaves.
The built-in 10A current limiting function is designed to help control current between battery packs when batteries with different voltages are connected in parallel.
Battery Protection:
- Cell overvoltage protection
- Cell undervoltage protection
- Charge over-current protection
- Discharge over-current protection
- Short-circuit protection
- High-temperature protection
- Low-temperature charging protection
- MOS temperature protection
Monitoring & Configuration:
Battery information can be monitored through the JK BMS mobile app or compatible PC software. Depending on your setup, you can view information including:
- Individual cell voltages
- Total battery voltage
- Charge and discharge current
- State of Charge (SOC)
- Battery temperature
- Balancing status
- Protection and alarm status
- System logs
Frequently Asked Questions
Is the JK-PB2A16S20P suitable for a 48V LiFePO4 battery?
Yes. It is commonly used with 16S LiFePO4 battery banks, providing a nominal battery voltage of 51.2V.
What does the 2A active balancer do?
The active balancer transfers energy between individual cells to help reduce voltage differences within the battery pack.
Can this BMS communicate with a Deye inverter?
The JK PB series supports CAN and RS485 communication and JK provides configuration information for Deye inverters. Compatibility should still be confirmed for your specific inverter model and firmware.
Can multiple batteries using this BMS be connected in parallel?
Yes. The PB series supports master/slave communication between multiple battery BMS units using its parallel RS485 communication system.
Can I monitor the BMS from my phone?
Yes. The BMS supports Bluetooth connection to the JK BMS mobile app for battery monitoring and configuration.
Warranty:
This product is covered by a 2 year warranty against manufacturing defects from the date of purchase. The warranty does not cover damage caused by misuse, incorrect installation, accidental damage or unauthorised repairs.
Need help choosing the right BMS?
Contact our team with your battery voltage, cell configuration and inverter model and we can help you select the right JK BMS for your battery system.
Document
Video
Customer Reviews
Yea the product works, it is very customisable or works out of the box. You have to fully charge the batteries before it’s really accurate
BMS
- Type
- Smart BMS
- Cell Series Config
- 8S TO 16S
- Active Balancer
- Yes
- Bluetooth
- No
Physical & Warranty
- Warranty
- 2 Year
- Compatibility Notes
- Compatible with 8S cell configurations
We have a 30-day return policy if the item is damaged or is not as described, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at sales@lifepo4oz.com. If your return is accepted, we’ll provide instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at sales@lifepo4oz.com.
If you change your mind, you may be eligible for a return, however the items must be unused and in their original packaging. Once returned to us, we will inspect the goods and, if approved, a 20% restocking fee will apply.
Damages and issues
If you receive any items which appear to be damaged, do not attempt to use them. Please inspect your order upon receipt and contact us immediately if the item is defective, damaged, or if you receive the wrong item, so that we can evaluate the issue and make it right.
Products damaged in transit
If you receive a shipment that has been damaged in transit, a replacement or refund may be provided, subject to the following conditions:
- The return or damage claim must be made within 24 hours of receiving the shipment.
- All shipments must be inspected for damage during the unloading process.
- Clear photos of the damaged packaging and damaged product must be provided as evidence.
- Photos must be taken during the unloading process.
- Photos must clearly show all damage and, where possible, the likely cause of the damage.
- The total approved claim value, including freight costs, will be credited to your account.
Exceptions / non-returnable items
We do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item. A 20% restocking fee will apply.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded to your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund.
All orders will be safely packed and shipped within 1 day. All products are shipped via Road Freight only.
All efforts are made to ensure the products safe during transport, however if you receive an item which looks like it may have been damaged during tranport you must take a photo before trying to use the product.
Shipping
All orders are shipped via Road Freight. As such there is not Express Shipping available.
RETURNS
We aim to keep our customers happy and if you are unhappy with your items due to them being damaged or not as described, simply return them for a refund. A 20% restocking fee will apply.
Top Quality Goods
Our aim is to provide high-quality products at an affordable price. If you receive a product that is damaged, do not use the item. Please inform us within 24 hours of receiving that product. We will replace the product as soon as possible without any charges.
REFUNDS
A refund will be provided if you have purchased an item that does not operate as described. Once we have verified you claims we will offer a refund and pay for the return freight cost.
