TLDR Review: Ultraxxis 18V 8.0Ah Ryobi Replacement Batteries
Pros
- •Batteries fit perfectly and are fully compatible with all Ryobi 18V ONE+ tools.
- •Charging experience closely matches that of genuine Ryobi batteries, including a functional charge monitor.
- •Offers excellent value for the price compared to original Ryobi batteries.
- •Performs reliably during extended use, making it suitable for DIY projects lasting several hours.
- •Both batteries in the ack charge well without issues.
- •Provides good overall power and acceptable performance for typical cordless tool use.
- •Charger included is of good quality and similar to the original Ryobi charger.
Cons
- •Battery life is shorter than some users expected, with actual power output sometimes perceived closer to 4A rather than the advertised 8.0Ah capacity.
- •Lonerm durability and performance remain uncertain due to limited user experience over time.
- •Some users note the power and runtime do not fully match genuine Ryobi originals.
Bottom Line
These Ultraxxis replacement batteries are a solid, budget-friendly alternative for Ryobi 18V ONE+ tools, fitting perfectly and charging reliably with good performance for the price. However, if you need the absolute longest runtime or power output matching Ryobi’s originals, you might notice some drop-off in battery life. For general DIY and occasional use, these batteries deliver great value and functionality. If longer battery life and guaranteed performance are critical, consider sticking with genuine Ryobi batteries or researching higher-capacity options specifically designed for extended runtime.
How we researched this
About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from thousands of retailers to give you the short version.
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