Which battery is best? The Ryobi P122 vs P108

If your current power tool batteries are not quite holding their charge for as long as they used to or are no longer providing you with the level of power you need then you should definitely consider the high capacity Ryobi P122 or Ryobi P108 lithium ion batteries.

Both of these lithium ion batteries are compatible with all of Ryobi’s One Plus 18 volt power tools. They each have a 4.0 Ah capacity meaning they are have a run time that is extra long and have loads of power. This makes them ideal for use by professional tradesmen working on large scale projects.

In this review we will take a detailed and comprehensive look at these two high capacity lithium batteries on your behalf. Based on each of these reviews, we will then make a final recommendation on whether it is the P122 or the P108 that you should buy.

Ryobi P122 4AH One+ High Capacity Lithium Ion Battery

The Ryobi P122 comes packed with loads of capacity and if that is not enough, you get two batteries in the pack. This is the only difference between the Ryobi P122 and the Ryobi P108 – it is basically a two pack of the P108 lithium ion battery.

So because you get two high capacity lithium ion batteries in this pack, it means it provides you with double the level of fun – right? The answer to this is yes! These types of batteries are something that anyone with an interest in DIY or any professional tradesman should have more than one of in their tool box or workshop.

This way you will never have the frustrating downtime of having to wait around for your power tool battery to charge. All you have to do is put one of them on charge whilst the other one is in use. The Ryobi P122 is able to run up to 4 times the life span of regular Ni Cd battery and will provide you with up to 35% increased power as well. This is all thanks to its 4.0 Ah lithium ion battery.

This battery will also feel much lighter than the old style batteries, thus making it a lot easier to use over extended periods and means you will avoid experiencing fatigue and muscle aches.

Using The Ryobi P122 Battery

When using the Ryobi P122 you will see and feel an instant increase in capacity in comparison to the 1.5 Ah Ni Cd batteries which often come with most of Ryobi’s One Plus cutting and drilling power tools. You will also experience an increase in the running time with the Ryobi P122.

On the front right of these batteries there is a power gauge to display to the user how much charge is left in them. Lithium ion batteries are capable of withstanding extremely low temperatures – to the level of below freezing. If they are put on charge when they are too cold, the charger will recognise this fact and then wait until it is warm enough to begin charging.

However, one of the main problems with these types of batteries is the fact that they can not cope with extremely high temperatures. If you were to leave them out in the sun on a really hot day during the summer then do not be surprised if you experience problems when using them.

Check out the price of the Ryobi P122

If you are not going to be using these lithium ion batteries for a period that is longer than 30 days it is recommended that they have at least 50% charge left in them. This is because the batteries, under normal usage conditions, do degrade slowly over their life span of around 3 to 5 years.

Once they come to the end of their life span, lithium ion batteries can be recycled. To do this, simply tape up their contact points and then go and drop them off at any recycle disposal point. This includes landfill sites and participating hardware stores.

Specifications

  •     1 watt
  •     18 volts
  •     A total weight of over 1.7 lbs
  •     A full 3 year warranty

Pros

  •     Lengthy run time
  •     High powered
  •     Huge torque
  •     Simple to use

Cons

  •     It can some times over heat

What others say about the Ryobi P122

Users of the Ryobi P122 lithium ion batteries are very positive about their quality and life span. Some of the examples of what they said are below:

These batteries are much better than the original NI CAD Ryobi batteries. They last much longer, much cheaper than the Ryobi NI CAD’s. You can not go wrong with these as they give new life to your old Ryobi tools.”

These battery fit Ryobi tools perfectly. They arrived fully charged. I used them the first time yesterday on a plumbing job. I drilled several holes, used my sawzall several times cutting pipes and used my flashlight for several hours. No sure how long they’ll last yet. I’m happy with my purchase.

“Purchased these batteries along with charger (Ryobi RC18120 18V ONE+ Compact Charger) at the same time due to not being compatible with earlier charger. Fits the earlier (Blue Tools eg. Drill Model CDI-1800, + Jigsaw) needed new batteries as original ones that came with drill & jigsaw combo set stopped holding their charge. Haven’t used it in earnest but all looking promising, took ~ 30 mins to fully charge the battery from being on 1bar residual charge that was in battery from delivery.

However, some users are not so positive about the Ryobi P122 lithium ion batteries. Some of the examples of what they said are below:

I purchased these batteries along with the Ryobi leaf blower based on the reviews of it giving me a potential continuous 4 hour usage …..these reviews are clearly false as I’m getting a maximum 20 minutes which for my large garden is totally useless so back to manually raking!!! A very disappointed customer who feels robbed as charger, leaf blower and battery total expenditure was around £190 and it’s not fit for purpose!!!

great battery lots more power and run time but the + terminal on battery started getting very hot and after a couple of months started to melt terminal while in use and after a couple more months melting in charger ..only 8 months old ….have contacted Ryobi who are sending replacement ……love Ryobi there great.”

I have the older model, but the new battery works fine. However I didn’t realise that the older model charger won’t charge this battery (and don’t recall seeing it anywhere), so looks like I’m going to have to buy a new charger too.

Ryobi P108 4AH One+ High Capacity Lithium Ion Battery

The Ryobi P108 lithium ion battery is no different to the Ryobi P122 that we previously discussed. And just like the Ryobi P122, the Ryobi P108 is packed with all the power you should ever need. As the product name suggests, it too has a 4.0 Ah battery that is lithium ion.

This does not mean that it will run for 4 hours but it does mean that it will run for 4 hours longer than the standard Ni Cd batteries you may have been previously using. Ryobi have stated that this lithium ion battery not only provides a greater level of both power and torque but that the run time is also much longer with the Ryobi P108.

This model of lithium ion battery by Ryobi weighs much less than the likes of their Ni Cd batteries, thus making the power tool it attaches to much lighter and so becomes easier to use, especially for extended periods of time. The battery will operate in extremely cold temperatures. In fact it will continue to work all the way down to just below 14 degrees, which is way past freezing.

It comes with a power gauge on the front that has an LED light display to indicate the level of charge that is left in the battery. This is a highly useful feature that ensures you never run out of charge half way through a job. Ryobi’s IntelliPort charger, which is sold separately, works to keep the P108 lithium ion battery in good condition throughout its lifespan.

Check out the price of the Ryobi P108

One thing to consider with a lithium ion battery is the fact that it does not need to be completely discharged prior to it being recharged. They can also be left on charge for conditioning. If you are planning on storing the battery for any amount of time that is longer than 30 days then we recommend you leave them with between 30% and 50% of charge in it before doing so.

Just like all other Ryobi power tools, the Ryobi P108 comes with a 3 year long limited warranty. This means that if you were ever to experience any issues (this is highly unlikely to happen as Ryobi make quality products) with the battery or if it ever stopped working, within the first 3 years, then you could get it replaced replaced for a new one free of charge.

Specifications

  •     1 watt
  •     18 volts
  •     A total weight of over 1.7 lbs
  •     A full 3 year warranty

Pros

  •     Lengthy run time
  •     High powered
  •     Huge torque
  •     Simple to use

Cons

  •     It can some times over heat

What others say about the Ryobi P108 4AH One+ High Capacity Lithium Ion Battery

Users of the Ryobi P108 lithium ion batteries are very positive about their quality and life span. Some of the examples of what they said are below:

I have several 14.4V Ryobi drills which worked well but the batteries were rather useless. I now have a fast and powerful drill again. When you think the alternative was to dispose of these drills this was a real bargain. I can also charge it using the old charger as it handles both 14.4V and 18V. I also love the indication of how much life is left in the battery. That helps to ensure that the battery does not discharge too far, which kills Lithium batteries. Highly recommended.

The product fits all the Ryobi one + 18v cordless tools and charger perfectly. Is fine quality at less than 1/2 price compared to B & Q and it didn’t take me 1 1/2Hrs to go and get them!

Excellent, long-lasting, powerful 4.0Ah battery for the One + system. Powers either my grass trimmer and sander for well over an hour’s worth of work. I tire before the battery does. Recharges quickly using the fast charger – just an hour to get from completely flat to fully charged. Weighs approximately 800g – which isn’t the lightest of batteries, but is light enough not to be a problem either to 5’5″ of female and not particularly muscular me, or my 71 year-old Dad.

However, some users are not so positive about the Ryobi P108 lithium ion batteries. Some of the examples of what they said are below:

“Not sure if it’s a thermal cut out or a dud battery – but I’ve only used it a couple of times and every time it has died under load.”

Only used it a couple of times. Charger says its charged (tried 2 chargers) but no indicator lights on battery and wont power anything.”

Died after a week. Will not take a charge.

Conclusion

Both of these models are basically the same batteries so the decision as to which to buy is solely based on what ever your requirements are and if you are happy to work with just one battery. This is what will determine which Ryobi model to go for in this instance.

If a solitary lithium ion battery will be sufficient for your needs then we recommend buying the Ryobi P108 as it is cheaper. However, if you need constant use of your power tools and you do not have the patience or time to wait around for the battery to charge then we recommend you buy the Ryobi P122 twin pack instead.

Check out the price of the Ryobi P122