$16.99 USD
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$-16.99 USD
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SKU: LI12V3S30A
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Smart, pre-wired protection for your Li-Ion battery build.
This Li-Ion Battery Management System offers a versatile solution for efficient energy management across a range of applications. Available in multiple voltage configurations, it monitors charge levels, temperature, and overall battery health to ensure optimal performance and longevity — suited for both consumer electronics and industrial builds.
Key Features
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Smart cell balancing — automatically balances each cell to maximize battery life and performance
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Multiple protection modes — guards against overcharge, over-discharge, overcurrent, and short circuit
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Temperature monitoring — built-in sensors prevent damage from extreme heat or cold
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Pre-wired balancing leads — ready to connect right out of the box, no extra parts needed
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Compact design — fits easily into most battery enclosures
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Easy plug-and-play installation — simple setup with clear instructions included
Available Configurations
| Configuration |
Voltage |
Cell Count |
Max Current |
| 12V 3S 30A |
12V |
3S |
30A |
| 12V 3S 50A |
12V |
3S |
50A |
| 24V 7S 50A |
24V |
7S |
50A |
| 36V 10S 50A |
36V |
10S |
50A |
| 48V 13S 30A |
48V |
13S |
30A |
| 48V 13S 50A |
48V |
13S |
50A |
Specifications
| Specification |
Details |
| Base SKU |
LI12V3S30A |
| Battery Type |
Li-Ion |
| Balance Function |
Pre-wired balancing leads included |
| Protection |
Overcharge, over-discharge, overcurrent, short-circuit |
| Monitoring |
Built-in temperature sensors |
What's in the Box
- 1 x Li-Ion BMS (configuration per selection)
- Pre-Wired Balancing Leads
- Installation Instructions
FAQ
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How do I choose the right configuration?
Match the "S" (series cell count) and voltage to your specific Li-Ion pack — for example, a 12V 3-cell pack needs the 12V 3S option.
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What does smart cell balancing do?
It automatically evens out charge across each cell, preventing weaker cells from dragging down pack performance or lifespan.
-
Does this include temperature protection?
Yes, built-in sensors monitor temperature and help prevent damage from extreme heat or cold.
-
Is installation difficult?
No, it's plug-and-play with pre-wired leads and included instructions.
You May Also Need
Building a full pack? Browse Cylindrical Cells, Spot Welders, and Heat Shrink & Connectors. Need LiFePO4 instead? See our LiFePO4 BMS with Balancing Leads or Smart Bluetooth LiFePO4 BMS.
Why Buy from Mach 1 Lithium
Mach 1 Lithium supplies the real components DIY builders need — accurate specs, genuine protection circuitry, and support if you're not sure which configuration fits your build.
