Hardin HD-BL1840B 18V 4.0Ah Lithium-Ion Battery Compatible with Makita 18V LXT & Hardin VoltCore 18V Tools
The Hardin HD-BL1840B 18V 4.0Ah Lithium-Ion Battery delivers dependable aftermarket power for compatible Makita 18V LXT and Hardin VoltCore 18V cordless tools. Built with a true 4.0Ah capacity, it provides the extended runtime needed for demanding drilling, fastening, cutting, and maintenance applications without frequent recharging. An integrated LED charge level indicator lets you check remaining battery power at a glance, while an impact-resistant outer case and shock-absorbing inner liner protect internal components against the drops and impacts of daily jobsite use. The HD-BL1840B is engineered for all-weather performance, maintaining reliable power delivery across a wide range of temperatures and jobsite conditions. Whether used as a primary battery, a replacement, or a spare pack, it is a practical and cost-effective power solution for users running compatible 18V cordless platforms.
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Features:
- Aftermarket equivalent similar to the Makita BL1840B 18V 4.0Ah battery — engineered to deliver similar fit, voltage, and capacity at a cost-effective price point.
- Delivers consistent 18V cordless power with a true 4.0Ah capacity for extended runtime across compatible Makita 18V LXT and Hardin VoltCore 18V tools.
- Monitors battery status immediately with an integrated LED charge level indicator that shows remaining power without a separate tester.
- Protects internal components with an impact-resistant outer case and shock-absorbing inner liner built to withstand regular jobsite handling.
- Maintains reliable power output across a wide range of temperatures and all-weather jobsite conditions.
- Serves as a practical replacement, backup, or additional battery pack for compatible 18V cordless tool platforms.
Specifications:
- Battery Type: Lithium-Ion
- Voltage: 18V
- Capacity: 4.0Ah (True Rated)
- Charge Level Indicator: Yes (Integrated LED)
- Compatibility: Makita 18V LXT Tools, Hardin VoltCore 18V Tools
| Brand | Hardin |
|---|---|
| Model# | HD-BL1840B |

