ASUNCELL RB18L50 18V 5.0Ah Ryobi replacement battery
Product description
This 18V lithium-ion replacement battery pack from ASUNCELL brings longer runtime to Ryobi One+ tools, offering 5.0 Ah capacity and an onboard LED charge indicator to monitor remaining power during projects. It is aimed at DIYers and trade users who need extra runtime for cordless drills, saws and other 18V Ryobi equipment.
Key Points

The twin-pack includes two RB18L50-format batteries that increase available operating time compared with lower-capacity cells. According to the manufacturer, the batteries are compatible with many Ryobi 18V models and include built-in protection circuits for overcharge, overdischarge, overcurrent and overheating. The LED indicator shows approximate remaining charge so you can plan recharges more effectively. Consider that third-party batteries may not be covered by the original tool maker’s warranty.


Technical Specifications

- Name: ASUNCELL RB18L50 2 Pack
- Type: Lithium-ion battery
- Voltage: 18 V
- Capacity: 5000 mAh / 5.0 Ah
- Safety: CE and RoHS certified according to the manufacturer
Benefits



These cells offer longer continuous use compared with lower capacity 18V packs, which can reduce interruptions for recharging. The integrated protection and cell-balancing aim to keep performance stable over repeated charge cycles, and the lack of a memory effect means partial charging is acceptable. Carrying a spare battery in the pack helps maintain productivity on longer jobs and reduces downtime on site or in the workshop.
Usage Recommendations

Use the batteries with compatible Ryobi One+ 18V tools listed by the manufacturer, inserting them in the same way as the original packs. Recharge with a suitable Ryobi-compatible charger and avoid prolonged exposure to extreme temperatures to preserve lifespan. If storing for extended periods, keep the batteries in a cool, dry place and recharge periodically as recommended by the battery maker to maintain capacity.
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