2X 18V P108 Replacement Battery for Ryobi + 4A Charger — 5500mAh, compatible with Ryobi ONE+
Product description
What it is
This is a 18V Li-Ion replacement battery kit designed for Ryobi ONE+ cordless tools. The two batteries in this 2× set offer a combined capacity of 5500mAh each, delivering a practical balance of runtime and durability for everyday tasks.
Compatibility and fit

The pack is advertised as a replacement for Ryobi P102, P103, P104, P105, P107, P108 and is compatible with all Ryobi 18V ONE+ cordless power tools. It also states compatibility with Ryobi fast chargers P117 and P118, which can help you get back to work quicker. If you’re unsure about fit, the supplier recommends selecting your model before purchasing to avoid mismatches.
Core specs you can rely on
- Battery type: Li-Ion
- Voltage: 18V
- Capacity: 5500mAh / 5.5Ah per unit
- Battery condition: Brand new
- Charging support: 6A charging current with standard 100–240V input chargers for 12V–18V Li-Ion packs
- LED display: Four-LED remaining capacity indicator and diagnostic signals when pressed
- Safety: Integrated microchip helps guard against deep discharge, overload and short circuits, designed to meet or exceed OEM specifications



How it performs in practice
On paper, the 5.5Ah capacity should help you extend runtimes on common 18V tasks, reducing the need for frequent battery swaps. The LED indicator is useful in busy jobs to gauge remaining power at a glance. The safety features, including protection against deep discharge and short circuits, are standard expectations for modern Li-Ion packs and can contribute to longer battery life when used with compatible chargers and tools.
What stands out

- The inclusion of a four-LED status display adds visibility of remaining capacity.
- Compatibility across a wide range of Ryobi 18V ONE+ tools makes it a flexible option if you already own multiple Ryobi devices.
- The claim of meeting or exceeding OEM specifications provides some reassurance about performance and safety features.
Potential drawbacks
- It’s described as a replacement battery rather than an official Ryobi battery, so reliability may vary with less direct OEM validation or warranty coverage.
- The charger compatibility is noted for P117 and P118, if you use alternative chargers, results may differ.
- Exact real-world runtime will depend on tool power draw, task type, and operating conditions, so outcomes may vary from what you expect.



Who this is for
This kit could suit casual and DIY users who already rely on Ryobi 18V ONE+ tools and want a ready supply of replacements or a quick swap when a battery runs low. It’s reasonable for hobbyists, homeowners and light to medium-duty tasks around the home or workshop.
When to think twice

If you rely on peak-performance for frequent heavy-duty use, or if you prefer OEM-confirmed parts with official warranty coverage, you might want to compare with genuine Ryobi batteries. The replacement nature means long-term durability and service might not align with OEM expectations, depending on your usage pattern.
What to check before buying
- Ensure your model number aligns with the P102–P108 series to avoid compatibility issues.
- Confirm you have or plan to use a compatible 12V–18V Li-Ion charger (P117/P118 or suitable equivalent).
- Consider how often you need open-circuit or real-world runtime in your tasks to evaluate whether 5.5Ah meets your needs.
- Check the seller’s return/warranty terms in case the units don’t perform as expected.



Quick real-world scenario
Imagine you’re finishing a decked-out weekend project and you’ve got a drill, light saw and impact driver. With the two 18V packs, you can alternate between tools, keeping one on charge with the fast charger while the other powers through the task. The LED indicators help you monitor power without swapping batteries mid-project, which can help you stay on track.
FAQ (practical answers based on available data)
- Q: Will this work with all Ryobi 18V ONE+ tools? A: It’s stated to be compatible with all Ryobi 18V ONE+ tools, but always confirm model compatibility before purchase.
- Q: Do the batteries come with a warranty? A: The data does not specify warranty details, verify with the seller.
- Q: Can I use any charger? A: The description mentions fast charging with P117/P118, other chargers may work but results aren’t guaranteed.
- Q: How accurate is the LED charge indicator? A: The unit provides a four-LED display for remaining capacity and diagnostic signals, practical accuracy may vary with usage.
Is it worth it?
It makes sense if you already rely on Ryobi 18V ONE+ tools and want a cost-conscious replacement option that offers a familiar charging workflow and a clear remaining-power readout. Not the best option if you need OEM-backed assurances or plan heavy, continuous use where maximum battery life is essential. A solid middle-ground choice for value-conscious users who prioritise flexibility and practical features over brand-first guarantees.
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