Ryobi 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A

I got this battery for my ruby.Myobi blower six hundred and fifty c f m blower.It works very well.The batteries are great.I have two spare, I have three total.I use two every time I do my job

Knock-off brands of these batteries are cheaper but not always reliable. I have a Ryobi lawn mower I use these batteries for. It came with a 6 amp hour battery which is considerably larger and heavier than the 4 amp hour shown here. For that difference in size and weight it runs maybe 10 minutes longer. So I opted for the 4 amp hour battery. I need to be able to mow for two hours or so and three of these allow that (if I put the first empty battery back in the charger right away so it has time to recharge so I can reuse it without interruption).

I was worried that this might not be a genuine Ryobi product but it looks identical to the one I already have that I bought from the home depot. Hopefully, Ryobi will make their prices more competitive though. They used to be the more affordable option on the market but now seem to be just as expensive as the other big brands. FWI do not leave your battery plugged into the charger after it is charged. That will hurt the battery. When the battery is fully charged, disconnect the battery from the charger and place it in a room that is climate-controlled. If the battery is left in a shed or a garage that is exposed to extremely cold and warm temperatures, it will shorten the lifespan of the battery. I have 3 of the 40 volt, 4 amp batteries and they have lasted over a year so far with very little degradation. I always keep them indoors when not in use and never leave them on the charger once they are fully charged. Keep in mind that even if you unplug the charger from the wall you still should disconnect the battery from the charger as the circuit board in the battery can start to miss-calculate how much energy is in the battery. This is a problem that hopefully Ryobi will fix in the future.

I've purchased 4 off brand 6ah batteries. All died within a year. My original Ryobi 4ah is going strong 4 years later. Power doesn't sag much when put on a heavy load, ex mowing tall wet grass. It does have a overheat protection built in to prevent damage. I have 3 of these Ryobi batteries now and won't purchase other brands anymore. Live and learn. These cost more than cheap off brand batteries, but they pay for themselves by lasting years at a time and having a high steady output. It may be tempting to get 2x 6ah batteries for the price of this one, but don't do it! They have power sags and fail quickly. Save yourself money and buy Ryobi batteries.

The way the charger fits onto the battery is terrible. The cord placement is poorly thought out. No indicator light.