Milwaukee L4B3 USB Battery Pack
Premium 4V rechargeable battery for tradesmen and professionals
The Milwaukee L4B3 USB battery (part number 4933478311) delivers reliable 4V power for all Milwaukee REDLITHIUM USB rechargeable tools and accessories. This single-cell 3.0Ah battery powers flashlights, laser meters, headlamps, and heated clothing, making it essential for tradesmen who need portable, battery-powered solutions on site. Compatible with the complete Milwaukee REDLITHIUM USB range, this cordless battery eliminates disposable batteries and reduces running costs for professional trades.
Key Features
- ✔ Over 1,000 Charges — wire-free, rechargeable battery eliminates throwaway alkaline cells for extended service life
- ✔ 12 Wh Capacity — delivers up to 2x more energy than three AAA alkaline batteries for increased operating time
- ✔ REDLITHIUM Technology — advanced Li-ion chemistry maintains power and runtime in demanding job site conditions
- ✔ USB System Compatible — works with all Milwaukee rechargeable USB-powered auxiliary tools and accessories
- ✔ Fast Charging — battery powered up in just 120 minutes using L4C charger
Technical Specifications
| Voltage | 4V DC |
| Capacity | 3.0Ah (3000mAh) |
| Energy Rating | 12 Wh |
| Battery Type | RED Li-Ion (Lithium Ion) |
| Model | L4B3 |
| Part Number | 4933478311 |
| Charging Time | 120 minutes (with L4C charger) |
| Weight | 0.04 kg |
| Country of Origin | Germany |
| System | REDLITHIUM USB |
What's in the Box
- 1x Milwaukee L4B3 USB Battery Pack (3.0Ah)
Part of the Milwaukee REDLITHIUM USB System — This battery pack is fully compatible with all Milwaukee rechargeable USB-powered products, including auxiliary tools such as flashlights, laser metres, headlamps, and heated clothing. One single-cell battery provides reliable performance across the entire REDLITHIUM USB range for tradesmen and professionals on the job site.
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