12V Rechargeable Battery — Custom Lithium Ion Packs
High-performance 12V rechargeable lithium ion batteries from 3,000mAh to 52Ah. Built with Samsung, LG, and LISHEN cells. Certified, customizable, and ready to ship.
500+
Charge Cycles
60%
Lighter than SLA
2×
More Capacity
UN38.3
Certified
What Is a 12V Rechargeable Battery?
A 12V rechargeable battery is a battery pack that delivers a nominal 12-volt output and can be recharged hundreds of times. Unlike traditional sealed lead-acid (SLA) batteries, modern 12V rechargeable lithium ion battery packs are significantly lighter, charge faster, and last up to five times longer.
At RhimoPower, we manufacture custom 12V rechargeable lithium batteries using premium Li-ion (18650 cells) and LiFePO4 chemistry. Capacities range from compact 3,000mAh packs for portable electronics up to 52Ah large-format packs for industrial and solar applications.
Every pack includes a built-in Battery Management System (BMS) with over-charge, over-discharge, short-circuit, and temperature protection — ensuring safe, reliable operation across all use cases.
Quick Specifications
| Nominal Voltage | 12V (Li-ion) / 12.8V (LiFePO4) |
| Capacity Range | 3,000mAh – 52,000mAh |
| Cell Chemistry | Li-ion / LiFePO4 / LiPo |
| Cycle Life | 500+ cycles (Li-ion) |
| Cell Brands | Samsung / LG / LISHEN / ATL |
| Protection | BMS, OVP, OCP, SCP, OTP |
| Certifications | UN38.3 / MSDS / IEC / KC |
12V Rechargeable Lithium Battery Pack Models
Standard in-stock models available for immediate sampling. All models support custom labeling, connector, and enclosure options.
| Model | Capacity | Charge Input | Output | Dimensions (mm) | Cell Brand |
|---|---|---|---|---|---|
| DNK-LTB3S1PC18H | 12V 3,000mAh | 12.6V 1A | 12V 2A | 70 × 58 × 20 | LISHEN / FST |
| DNK-LTB3S1PC18EH-R | 12V 3,500mAh | 12.6V 1A | 12V 2A | H70 × D38 | Samsung / LG |
| DNK-LIP3S2P8A | 12V 6,000mAh | 12.6V 2A | 12V 2A | 120 × 70 × 18 | ATL / DNK |
| DNK-LIP3S1P8A | 12V 8,000mAh | 12.6V 2A | 12V 2A | 95 × 60 × 26 | ATL / DNK |
| DNK-LTB3S2PC18M | 12V 5,200mAh | 12.6V 2A | 12V 2A | 68 × 60 × 40 | LISHEN / FST |
| DNK-LTB3S4PC18H | 12V 12,000mAh | 12.6V 2A | 12V 3A | 115 × 68 × 38 | Samsung / LG / LISHEN |
| DNK-LTB3S4PC18M-R | 12V 10,000mAh | 12.6V 2A | 12V 3A | H135 × D56 | LISHEN / CM / FST |
| DNK-LTB3S8PC18H | 12V 24,000mAh | 12.6V 4A | 12V 10A | 235 × 70 × 40 | Samsung / LG / FST |
| DNK-LTB3C10PC18H | 12V 30,000mAh | 12.6V 3A | 12V 8A | 195 × 60 × 70 | Samsung / LISHEN |
| DNK-LTB3C20PC18M | 12V 52,000mAh | 12.6V 3A | 12V 4A | 195 × 60 × 70 | CHARM / LISHEN |
| DNK-LFP4S2PC26-PL | 12V 7,000mAh (LiFePO4) | 14.6V 2A | 12V 3A | 112 × 70 × 40 | LISHEN / GREAT POWER |
Don’t see the capacity you need? Request a custom model →
Why Choose a Lithium 12V Rechargeable Battery Over Lead-Acid?
Sealed Lead-Acid (SLA) batteries were the standard for decades. Lithium ion chemistry has now surpassed them in every measurable metric that matters for modern applications.
| Feature | 12V Lithium Ion (This Product) | 12V Sealed Lead-Acid |
|---|---|---|
| Cycle Life | 500+ cycles | 100–200 cycles |
| Weight | 60% lighter | Heavy baseline |
| Usable Capacity | 95–100% | ~50% (DoD limit) |
| Charge Time | 1–3 hours | 8–16 hours |
| Self-Discharge Rate | <3% per month | ~20% per month |
| Maintenance Required | None | Regular top-up needed |
| Operating Temp. Range | -20°C to 60°C | 0°C to 40°C |
| Environmental Impact | No toxic lead | Contains lead, sulfuric acid |
Built-in Protection: Battery Management System (BMS)
Every RhimoPower 12V rechargeable battery includes a smart BMS that monitors and protects the cells continuously during charging and discharging.
Over-Charge Protection
Cuts off charging when cells reach maximum voltage, preventing thermal runaway and extending cell life.
Over-Discharge Protection
Disconnects the load before cells drop below the safe voltage threshold, preventing irreversible capacity loss.
Short-Circuit Protection
Instantly disconnects output in the event of a dead short, protecting both the battery and the connected device.
Temperature Protection
Monitors cell temperature and shuts down operation if charging or discharging temperature exceeds safe limits.
Cell Balancing
Active and passive balancing ensures all cells in the pack reach the same voltage, maximising capacity and lifetime.
Over-Current Protection
Limits peak discharge current to the rated threshold, protecting both the pack and downstream electronics from damage.
Common Applications for 12V Rechargeable Batteries
The 12-volt form factor is one of the most universally compatible battery voltages, powering equipment across dozens of industries.
Custom 12V Rechargeable Battery Packs — Designed for Your Application
Not every application fits a standard pack. RhimoPower offers fully custom 12V rechargeable battery design and manufacturing, from concept through to certified production.
- ✓ Custom capacity from 1,000mAh to 100Ah+
- ✓ Choice of Li-ion, LiFePO4, or Lithium Polymer chemistry
- ✓ Custom plastic enclosure, PVC wrap, or bare-cell format
- ✓ Custom connectors, terminals, and cable assemblies
- ✓ Private label and custom branding available
- ✓ Full compliance: UN38.3 / MSDS / IEC62133 / KC
- ✓ Low MOQ for samples; competitive bulk pricing
How to Choose the Right 12V Rechargeable Battery
Use this quick guide to identify the correct capacity, chemistry, and configuration for your specific application.
Determine Your Required Capacity (mAh / Ah)
Calculate how long your device needs to run per charge and multiply by its current draw. Example: a 1A device running for 10 hours needs a 10Ah battery. Add 20% overhead for efficiency losses.
Choose the Right Chemistry
Li-ion (18650) offers high energy density for compact, lightweight packs. LiFePO4 provides superior cycle life (2,000+ cycles), better safety, and stable performance — ideal for solar and outdoor use.
Consider Size, Connector & Certifications
Match the physical dimensions to your enclosure, confirm the output connector type, and verify any transport or safety certifications required for your industry (UN38.3 for air freight, IEC62133 for CE marking).
Certifications & Quality Standards
All RhimoPower 12V rechargeable batteries are manufactured and tested to international safety and quality standards.
Frequently Asked Questions About 12V Rechargeable Batteries
Ready to Source Your 12V Rechargeable Battery?
Tell us your capacity, application, and quantity and we will respond with a detailed quote within 24 hours. Sample orders welcome.
UN38.3 Certified · Custom OEM Available · Worldwide Shipping