Will it drain my battery over long storage?

No. Its operating consumption is under 100 uA, which is negligible - safe for seasonal storage of solar, RV, or backup battery systems.

What should I pay attention to during installation?

Strictly follow the wiring order: connect B- first, then the cell sampling wires from the lowest cell (B0) upward to B+. Never reverse or misconnect. The output of charging/discharging equipment must not exceed 50 V. Unauthorized disassembly voids the warranty.

KL71005 Battery Management System BMS Protection Board for Battery Pack Management

Name: KL71005 Battery Management System BMS Protection Board for Battery Pack Management
Brand: Kunlu Electronic Technology(Shanghai) Co., Ltd.
SKU: 2193198602

Shanghai, ChinaKunlu Electronic Technology(Shanghai) Co., Ltd.

US$19.90

100 Pieces

Product profile

Customization

Available

Product Type

Hardware BMS

Supported Battery Strings

Model NO.

KL71005

Compatible Battery Chemistry

LFP and NCM

Charging Voltage

LiFePO4

Discharge Overcurrent Protection

300A

Charge Overcurrent Protection

120A

Operating Temperature

-20C to +80C

Port Type

Common Port, P-

R&D Capacity

OEM ODM

Transport Package

Box Packaging

Specification

75*150*9mm

Trademark

KUNLU

Origin

China

Production Capacity

500 Pieces / Day

Key features

Purpose-Built for 8S 24V LiFePO4 Packs ,Dedicated hardware protection board for 8-series (24 V nominal) LiFePO4 battery systems, supporting CC-CV charging and constant-current discharge through a com

Complete Six-in-One Protection - Overcharge (3.70 V/cell), over-discharge (2.30 V/cell), charge overcurrent (120 A), discharge overcurrent (300 A), short circuit, plus high/low-temperature protection

Built-In Smart Balancing,Automatic passive balancing (30 to 70 mA) activates when a cell reaches 3.525 V during charging, keeping all 8 cells matched for longer cycle life and fuller usable capacity.

Ultra-Low Power, Plug-and-Play - Draws under 100 uA, so it virtually never drains your battery. Compact 75 x 150 x 9 mm board with included 800 mm wiring harness for quick installation

All-Climate Reliability - Operates from -20C to +80C with low-temperature charge protection at -5C, discharge protection at -25C, and high-temperature protection at 55C (charge) / 75C (discharge)

Company profile

Exhibition ExperienceNational Award receivedStandardized Supplier ManagementOverseas Services

Kunlu Electronic Technology(Shanghai) Co., Ltd.

Shanghai, China

Business Type: Manufacturer/Factory CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤1.75hTerms of Payment: LC, T/T, D/PInternational Commercial Terms(Incoterms): FOB, EXW, DDP, DAT, CIP, CPT, FCA, FAS, CIF, CFR, DAP

About Our Factory & Business Background

AddressRooms 313-314, 3rd Floor, Building a, No. 2228 Lianhua South Road, Minhang District, Shanghai, China

Registered Capital10,000,000 RMB

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Our Production Capability & Technical Expertise

Main ProductsBalcony Solar PV Kit, Balcony Energy Storage System, Sodium-Ion Battery, Lithium Battery, Ess, Lead-Acid Battery, BMS

Our Industry Experience & Global Business Record

Year of Establishment2020-09-04

Main MarketsNorth America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Repeat Buyers Choice30%~50%

New Products Launched in Last yearYes

Product Q&A

Q:What battery packs is the KL71005 compatible with?

It is designed for 8-series (8S) LiFePO4 battery packs with 24 V nominal voltage. Please do not use it with other configurations or chemistries.

Q:What protection functions does it provide?

Six core protections: overcharge, over-discharge, charge overcurrent (120 A), discharge overcurrent (300 A), short circuit (200 us cutoff), and high/low-temperature protection for both charging and discharging.

Q:Does it include cell balancing?

Yes. Passive balancing (30-70 mA) automatically starts when a cell voltage reaches 3.525 V during charging and the voltage difference exceeds the threshold.

Q:How much charge and discharge current can it handle?

Charge overcurrent protection trips at 120 A and discharge overcurrent protection at 300 A. The safe continuous current also depends on your battery pack's capacity and cell specifications.

Q:How does it respond to a short circuit?

The board cuts off the circuit within 200 microseconds of detecting an external short circuit. The protection releases once the load is disconnected.