Description
18650 12V 4400mAh Battery Pack
Compact, reliable, and built to last. This 18650 battry pack is With a solid 1000-cycle lifespan and built-in smart BMS, it keeps your devices safe from overcharge, over-discharge, and short circuits.
Lightweight yet powerful, easy to integrate with custom connectors, and fully adaptable if you need specific sizes or setups. One-year warranty included, and OEM/ODM options are welcome. Simple, dependable power that just works.
| Item | Details |
| Battery Size | 18650 |
| Battery Type | Semi-solid-state Li-ion |
| Model Number | 18650 |
| Product Name | 18650 12V Battery Pack |
| Nominal Voltage | 12V |
| Nominal Capacity | 4400mAh |
| Cycle Life | 1000 cycles |
| Cathode Material | LiCoO₂ |
| Operating Temperature | 0–60℃ |
| Weight | 1 kg |
| Protection | Built-in Smart BMS |
| Connector | Customized |
| Warranty | 1 Year |
| OEM/ODM | Supported |
| Package Size | 6 × 7.5 × 19 cm |
| Single Gross Weight | 2.0 kg |
This 12V 18650 battery pack is commonly used in solar lighting products such as street lights and garden lights.
It’s based on 18650 battery cells arranged in 3S2P structure, giving a 12V output that works well with most solar controllers.
In most cases, it’s used where the light needs to run through the night without unstable performance, especially in outdoor environments.
Where it is used
You’ll usually find this type of battery inside:
- solar street lights
- garden lights
- small outdoor LED systems
- security lights
It’s not for high-power systems. It’s more for standard lighting setups that run daily on solar charging.
Why 3S2P is used
The structure is quite straightforward:
- 3 cells in series → gives the voltage needed (around 12V)
- 2 cells in parallel → helps keep capacity more stable
In simple terms, it keeps the light running steadily instead of dropping power too fast at night.
Performance in real use
Solar lighting is not stable power input. You get full sun, cloudy days, sometimes partial charging.
So the battery has to handle:
- not fully charged days
- repeated daily cycling
- temperature changes outside
This pack is built for that kind of use, not lab conditions.
Protection (BMS)
There is a protection board inside the pack.
It covers basic safety:
- stops overcharging
- prevents over-discharging
- protects against short circuit
This is important because solar lights usually run unattended for long periods.
Custom options
Depending on the project, the battery can be adjusted:
- different capacities
- different plug types
- wire length changes
- logo / OEM labeling
- shape adjustments for housing fit
For OEM and bulk orders
This type of battery is usually not sold for single use.
Most customers are:
- solar light manufacturers
- outdoor lighting brands
- project contractors
For these cases, we match the battery based on the actual light design, not just the spec sheet.
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