I've got a couple of Bosch blue Professional 10.8V drill/drivers and a blue multitool that takes the same battery.
I've got 4 batteries which are all 1.4AH but I bought a new battery that's 2AH - I thought it would just last longer but it doesn't work at all in the drivers, only in the multitool.
Is there any explanation for this as I'm reluctant to buy another one in case that too doesn't work with the drivers?
Is it a genuine one? If so I simply cannot see whey it should not work unless the charger is not charging it. Seems very selective if they are all the same they should work. I can only think its connections are dodgy. Brian
With Li-ion batteries it can also come down to the protection circuitry.
Early Li-Ion systems would only include protection circuitry in the battery, and the tool itself was relatively dumb. More recent tools often have additional logic in the tool and a communications path to the battery. Hence the tool can detect error states like over current and cut the load at source.
Makita li-ion kit now has a star marked on the batts and tools that support this communication. In theory they can play nice together with non star marked packs and tools, but sometimes in the past there were some compatibility problems.
(To the OP, I have no experience with Bosch 10.8V kit, so don't know if similar issues could apply here)
Bosch is normally very tolerant.
I've had 10.8V new batteries work fine in my old tools and the new have higher capacity. Both old and new chargers work fine with new and old cells.
Garden tools on the 36V system - I can put a big battery (double the Ah) into a hedgetrimmer designed for the small battery and vice versa with the lawnmower and all work.
All genuine batteries though.
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