Power Tools
Ryobi 18V One+ High Capacity Batteries and Rapid Charger: What's New
New 8Ah and 12Ah high performance batteries plus a long-awaited rapid charger for the Ryobi 18V One+ platform, with an honest look at pricing against the competition.
Introduction
If you are invested in the Ryobi 18V One+ platform, this is a genuinely interesting update. The lineup has gained two new high performance batteries, an 8Ah and a 12Ah, alongside a new rapid charger that many users have been asking for. Larger capacity packs mean fewer battery swaps, longer runtimes, and more practical use for demanding tools and outdoor power equipment.
Here is a breakdown of what each new product offers, where it shines, and one pricing point worth considering before you buy.
What’s New in the Lineup
Ryobi has been releasing tools at a relentless pace, and these batteries fill an obvious gap. The platform previously offered a 9Ah pack that is no longer sold, and the new 8Ah and 12Ah options take its place. Both use premium 21700 cells, which is a meaningful step up in energy density, and both are positioned as high performance, long lasting solutions for expanding what your One+ tools can do.
Physically, these packs are noticeably large. They sit up higher than typical 18V batteries, though they appear somewhat more compact in length than some competitor packs. That slightly taller profile makes them feel a bit top heavy, but for fans, coolers, and outdoor equipment that is unlikely to matter.

Runtime and Power: What the Numbers Mean
Combining premium 21700 cells with Ryobi’s IntelliCell technology, these packs deliver 40 percent more power. The headline claims are impressive: the 12Ah battery offers up to 10 times more runtime, translating to over 500 cuts through 2x6 yellow pine with the brushless 7-1/4 inch circular saw, or nearly 48 hours of runtime on the Ryobi fan.
For aggressive applications like miter saws and outdoor power equipment, that kind of capacity changes how you work. Fewer swaps, fewer interruptions, and enough headroom for a full session on a single charge.

Ryobi 18V One+ 8Ah High Performance Battery
The 8Ah pack is the more compact of the two new options, priced at $179. It uses the same 21700 cell construction and heat management system as its larger sibling, making it a sensible choice if you want extended runtime without the full bulk of the 12Ah.
Ryobi 18V One+ 12Ah High Performance Battery
At $239, the 12Ah is the big one, and it is a big pack in every sense. This is where the runtime claims really land: 500-plus cuts, multi-day fan runtime, and the convenience of not constantly swapping batteries on a miter saw. For the new digital cooler and outdoor power equipment, this is the pack most likely to justify itself.
Cooling and Durability Features
Both batteries use Ryobi’s Cool Core Pro heat management system, which extends battery life by 50 percent. The design includes laser welded cell straps, upgraded heat sinks, and a more durable terminal design to reduce temperature under load, allowing the packs to run 30 degrees cooler and deliver fade-free power in aggressive applications.
Robust anti-vibration technology increases durability, and durable overmold adds protection both on and off the job site. In practical terms, the focus on cooling means you can push these packs hard without worrying as much about overheating during heavy cuts or long charging cycles.

Ryobi 18V One+ Rapid Charger
This might be the most important release of the bunch. At $89, the new 18V rapid charger is an 8-amp charger that was clearly needed. The small compact chargers that ship with most kits are painfully slow, and charging a 12Ah pack on one of those would take an entire day. This charger is not necessarily the fastest on the market, but it is the upgrade the platform was missing, and it should work well with the 4Ah and other packs too.
How It Compares to Milwaukee’s M18 High Output 12.0
For context, Milwaukee’s pro-grade M18 High Output 12.0 battery sells for $249, just $10 more than the Ryobi 12Ah at $239. That is a narrow gap, and it is the one honest criticism of this launch: the Ryobi pricing does not leave much of a discount against a pro-grade competitor pack, even though these packs frequently go on sale.
Both packs are physically similar in approach, with the Ryobi looking a bit more compact in length but sitting up taller. If pricing matters to you, it is worth watching for promotions on either platform before committing.

Overall Buying Advice
The 12Ah is the standout for outdoor power equipment, fans, and the digital cooler, where maximum runtime is the whole point. The 8Ah is the better fit if you want extra capacity without the full size. The rapid charger is practically a must-own if you buy either pack, since slow charging is the biggest downside of high capacity batteries. If you are already deep in the Ryobi ecosystem, these are sensible additions; just consider waiting for a sale if the 12Ah pricing feels tight.
Conclusion
Ryobi delivered what the One+ platform needed: bigger batteries with modern cell technology, real heat management, and finally a rapid charger to keep them topped up. The runtime figures are genuinely impressive, and for fans, coolers, and outdoor equipment these packs look like a strong fit. The only hesitation is the small price gap to pro-grade competition, which makes timing your purchase the smartest move.


