JKBMS Smart BMS 8S-24S 150A 1A Active Balance - Bluetooth BMS

In this review of the JKBMS Smart BMS 8S-24S 150A 1A Active Balance, the reviewer finds a capable battery protection board ideal for custom battery packs and small electric vehicles. The single biggest reason to consider it is the combination of comprehensive protection and built-in active equalization, which helps extend pack life while the integrated Bluetooth makes monitoring and configuration straightforward from a phone. Setup is straightforward for anyone familiar with battery wiring, and the BMS balances, protects, and reports pack health reliably.

Key Features

• Enhanced Safety: Provides overcharge, overdischarge, overcurrent, short circuit and temperature protections to safeguard cells and connected systems.
• Active Equalization: Built-in 1A active balance improves cell matching over time and can extend overall battery lifespan and usable capacity.
• Bluetooth Monitoring: Bluetooth connectivity works with the JK BMS mobile app so users can monitor voltages, temperatures and adjust parameters from Android or iOS devices.
• Wide Battery Support: Compatible with Li-ion, LiFePO4 and LTO chemistry types, making it adaptable for micro EVs, electric sightseeing cars and cargo tricycles.
• High Current Handling: Rated for 150A continuous current, suitable for many small electric vehicles and high-drain battery packs.
• Complete Kit: Ships with the Smart BMS unit, wiring, switch and NTC sensor plus an operation manual for initial setup.

Who It's For

This BMS is aimed at DIY battery builders, EV hobbyists and small vehicle integrators who need a reliable protection board with active balancing and remote monitoring. It is particularly useful when building packs that require chemistry flexibility between Li-ion, LiFePO4 and LTO and where active balancing will improve long-term pack performance.

It is less suited to users who want a plug-and-play sealed battery solution or those who cannot perform moderate wiring and configuration. If professional installer support or an RS485 converter is mandatory out of the box, buyers should account for the converter being sold separately.

Pros & Cons

Pros

• Comprehensive protection suite that covers voltage, current and temperature edge cases.
• Active balancing that reviewers note can equalize cells across the pack effectively.
• Bluetooth app control provides easy parameter adjustments and status monitoring from up to 20-30 ft in practical use.
• Good fit for multiple chemistries and a variety of small EV applications, offering installation flexibility.

Cons

• RS485 converter is not included, so advanced communications require an extra purchase.

Specifications

Model	JK-B1A24S15P
Supported series	8S to 24S
Continuous current	150A
Active balance current	1A
Connectivity	Built-in Bluetooth, RS485 (converter not included)
Compatible chemistries	Li-ion, LiFePO4, LTO
Included accessories	Wires, switch, NTC, operation manual

Our Verdict

The JKBMS Smart BMS 8S-24S 150A 1A Active Balance is a strong choice for builders and small EV integrators who need robust protection, flexible chemistry support and convenient Bluetooth monitoring. It represents good value when active equalization and remote configuration are priorities, provided the buyer can add an RS485 adapter if required for advanced communications.

Frequently Asked Questions

Does this BMS support LiFePO4?
Yes, the unit is compatible with Li-ion, LiFePO4 and LTO cell chemistries and can be configured accordingly in the app.

Is the RS485 converter included?
No, the RS485 converter is not included and must be purchased separately for wired RS485 communication.

Can I monitor the pack with my phone?
Yes, built-in Bluetooth works with the JK BMS mobile app on Android and iOS to view voltages, temperatures and change settings.