Your Full Guide to Ryobi Batteries: p122 vs p108 & Others

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Ryobi are the darling of any entry to mid-level DIY home owner. I’ve elaborated on that before in comparing them to Ridgid.

I like how they market their tools, but there’s one thing I think they got totally wrong:

Classifying their 18v Lithium batteries.

Seriously, I’ve seen so many people get confused about that. Couldn’t help but write a short guide on Ryobi’s new generation of batteries.

First of all, forget about things like Ryobi p122 vs the p108 battery, or Ryobi p108 vs p109.

P122 is just a battery pack of two p108s! And the ‘p109’ I see people searching the specs of is just a pack of two p107 batteries!

I repeat: these are not different batteries, they’re just a bundle!

Alright…Clearing up that misunderstanding, let’s see a quick comparison table of the newer 18V batteries. Keep on reading for some of my thoughts on them. 

Power
P108Thumb
  • Ryobi p108
  • Series:
    Lithium+
  • Power:
    4Ah

    ★★★★★
  • Weight:
    25oz
  • Weather resistant?:
    Yes.
  • Price
    $$$
Compact
p107Thumb
  • Ryobi p107
  • Series:
    Lithium+
  • Power:
    1.5Ah

    ★★★★
  • Weight:
    15.5oz, extra compact
  • Weather resistant?:
    Yes.
  • Price
    $$
Midway
P105Thum
  • Ryobi p105
  • Series:
    Lithium (standard)
  • Power:
    2.5Ah

    ★★★★½
  • Weight:
    24oz
  • Weather resistant?:
    No.
  • Price
    $$+

Ryobi p108 vs p107:
The Lithium+ Line

Ryobi went from NiCD batteries, to Lithium, to their latest Lithium+ line.

In other words: both the p108 and p107 are the brand’s cutting-edge technology.

Compared to the Lithium line (which p105 is a part of), both of them are way more durable. They’re also weather resistant – a groundbreaking feature Ryobi added only to the Lithium+ series.

This means less fear of cold weather and tools refusing to start up properly. No warming up necessary like you’d need to do with standard Li-Ions.

The difference between p108 and p107 is one of weight and power.

With 4Ah, p108 obviously blows away p107’s 1.5Ah.

A Full Guide to Ryobi Batteries: P108 vs p122, how p108 and p107 differ, and other valuable information.

At the same time, the more powerful p108 weighs quite a bit. 25oz is no joke. P107s are a lightweight take on 18v batteries with their humble 15.5oz.

You have to take your pick here. If you’re short on space or get tired easily when working with your tools, a p107 battery makes more sense.

If you have no problems with additional weight when working, I don’t see a better choice than the p108.

Keep in mind that both have on-board fuel gauges. You can check how much charge is left at any time – another feature of the Lithium+ line.

Both of them also use the same charger. That would be the Dual Chemistry 18v One+ charger Ryobi introduced as a part of this new generation.

Ryobi Batteries Guide: The Lithium+ Series All Work with This Charger

Ryobi p105 vs p108:
No real reason to get the p105

Sorry to be blunt, but aside from saving just a few bucks (potentially)…I really don’t see why you’d pick a p105.

As I said, p105 is part of the ‘upgraded’ Lithium battery lineup. However, Ryobi has since introduced the Lithium+ batteries, a major improvement.

Looking at the specifications, a p105 battery offers 2.5Ah at 24oz. Remember – p108 sports 4Ah at 25oz.

It’s just…well, not worth it.

Throw in the fact that the p105 is also not weather resistant and you’ve got a clear winner.

People underestimate how much this weather resistance thing means. Suppose you let a p105 out cold. In your car, in your patio, wherever.

You’d need to warm it up, otherwise it just won’t operate properly!

Now, if you’re comparing the p105 versus the p107…It will outperform it, and hard. But as I said, if you want max power, paying just a bit more for the p108 is the best option.

What about Ryobi NiCD batteries?
Is it worth it to get one?

I see no benefit of skipping Lithium batteries for the older NiCD technology. Ryobi themselves have also been distancing them from NiCD for quite a few years now.

Not hard to understand why.

Lithium Ion batteries deliver more power, and last for way longer. NiCDs go crazy if you leave them idle on a full charge. The rate at which they self-discharge is abysmal.

I’m not saying that Li-Ions don’t self-discharge. They do, but at a much slower rate.

Pair this with the Lithium+ line’s weather resistance – with cold weather being a major culprit of battery life reduction…And there is your winner.

If you’re into retro things, sure, go ahead and grab a NiCD as a collector’s accessory. Otherwise, just step in with the times and have more power, more longevity, and better durability inside your Ryobi tools.

Hope I helped clear up some misunderstandings around Ryobi’s…well, rather peculiar take on marketing their batteries!

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Ex-digital nomad, DIY enthusiast and passionate sci-fi fan. Always ready to give lifestyle tips for men. Tea, not coffee is my fuel for writing.