Easy to use and recharge first time, no time for reading through manuals. No problem common sense enough to use this product. Baby Boomer fell in love with Ryobi!! LONG old fashioned warranty just like in the old days.

This new design is going backwards compared to the previous design 5Ah battery (the one with rubber protection). This 36v is NOT backward compatible on my not-so-old self-propelled mower (2019, RLM36B50HP) — the battery cover would not close. And, the only other option to buy extra battery for my mower is to buy the 2Ah battery (too small).The original reason I buy Ryobi tools is that they maintain backward compatible, and therefore I can keep these tools for a longer time without needing to upgrade. But their recent 36v batteries design would force the consumers to upgrade sooner than later — not so good.This new 36v battery compared to the previous 36v, 5.0Ah battery design:Pros:- a tad lighter (but also with smaller capacity)Cons:- Smaller capacity than ... MoreThis new design is going backwards compared to the previous design 5Ah battery (the one with rubber protection). This 36v is NOT backward compatible on my not-so-old self-propelled mower (2019, RLM36B50HP) — the battery cover would not close. And, the only other option to buy extra battery for my mower is to buy the 2Ah battery (too small).The original reason I buy Ryobi tools is that they maintain backward compatible, and therefore I can keep these tools for a longer time without needing to upgrade. But their recent 36v batteries design would force the consumers to upgrade sooner than later — not so good.This new 36v battery compared to the previous 36v, 5.0Ah battery design:Pros:- a tad lighter (but also with smaller capacity)Cons:- Smaller capacity than 5A- It is higher and longer in size, despite smaller capacity- Not rugged design. Highly likely to break when dropped on the floor. In comparison, my old 36v have rubber bumpers around them and they didn’t cracked despite of accidental drops.- Would not fit into my 2019 mower. The Battery cover would not close (RLM36B50HP). The only other alternative available is 2AH, which is too small. The customer is left with a tool that has no battery support sooner than later (actually now no where to buy the original 36v 5AH battery)- Limited handling using a single hand. Can be carried using a single hand on one end only. In comparison to the older version where it can be confidently carried single handedly on either ends — because of there are notches for finger at “both ends”.What were they thinking? I hope Ryobi maintains backward compatibility modeling seriously. Otherwise, there are lots of choices these days to make a switch.

I’ve got 2 36v batteries and have had no issue what so ever. But having said that, my batteries says hi tech on the side of the batteries. So not sure if same as this or different. Either way I cannot fault mine atm and they get used quite a lot.