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BL1850B 6.0Ah 18V Battery for Makita BL1850B BL1840B BL1830B
BL1850B 6.0Ah 18V Battery for Makita BL1850B BL1840B BL1830B
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BL1850B 6.0Ah 18V Lithium-Ion Battery for Makita
Quick Answer: The BL1850B 6.0Ah 18V lithium-ion battery is a high-capacity replacement battery for Makita 18V LXT cordless tools. It is fully compatible with Makita BL1850B, BL1840B, and BL1830B battery systems, delivering 108Wh of energy (18V × 6.0Ah) — approximately 20% more capacity than a standard 5.0Ah BL1850B.
Key Specifications
| Battery Type | Lithium-Ion (Li-ion) |
| Voltage | 18V |
| Capacity | 6.0Ah (6000mAh) |
| Replaces Models | Makita BL1850B, BL1840B, BL1830B |
| Compatibility | Makita 18V LXT cordless tools and 18V Li-ion chargers |
| Protection | Built-in BMS: overcharge, over-discharge, over-current, short-circuit protection |
Which Makita Tools Does It Fit?
This battery works with all Makita 18V LXT cordless tools that accept BL1830B, BL1840B, or BL1850B batteries — including drills, impact drivers, circular saws, angle grinders, reciprocating saws, and blowers. It can be charged with standard Makita 18V lithium-ion chargers (e.g., DC18RC, DC18SD).
Why Choose 6.0Ah Over 5.0Ah?
Capacity directly determines runtime. At 6.0Ah versus 5.0Ah, this battery stores 20% more energy, which translates to roughly 20% longer runtime under the same workload — meaning fewer battery swaps on high-drain tools like circular saws and grinders.
Frequently Asked Questions
Is this battery compatible with my Makita BL1830B?
Yes. This 6.0Ah battery is a direct replacement for Makita BL1850B, BL1840B, and BL1830B. Any tool or charger that works with these models will work with this battery.
How long does a 6.0Ah 18V battery last?
Runtime depends on the tool and workload, but as a reference: 108Wh of energy provides approximately 20% longer runtime than a 5.0Ah battery and about 100% longer than a 3.0Ah BL1830B under identical conditions.
Can I use my original Makita charger?
Yes, it charges with standard Makita 18V Li-ion chargers such as the DC18RC and DC18SD.
Is this an original Makita battery?
No. This is a replacement battery engineered to match the fit, voltage, and interface of the original BL1850B, offering comparable performance at a lower price.
This is a third-party replacement product sold by ZhanPeng, operated by Changsha Liping Technology Co., Ltd. It is not manufactured by or affiliated with the original device manufacturer. All brand names, model numbers, and trademarks referenced are the property of their respective owners and are used solely to indicate product compatibility. ZhanPeng is an independent retailer and is not sponsored, authorized, or otherwise connected with the original equipment manufacturer.