Powerextra Upgraded 2 Pcs 10.8V-12V 3000mAh Li-ion Replacement Battery, Compatible with Bosch BAT411 BAT411A BAT412 BAT413 GBA12V30 BAT414, 2 Pack

I was initially concerned about it fitting in my drill as there is a plastic nub or column close to electrodes. This made it really tight fitting, but my tools are pretty new. Upon investigation, that plastic nub is exactly the same on higher capacity Bosch batteries.I am grateful to get both if these high capacity batteries for less than one lower capacity Bosch brand battery.I cannot speak to durability at this time, but for now they are working very well.They are compatible with both of my Bosch tools and with my Bosch charger.

both failed with different problems. first one does not slide in properly to any of my 4 bosch tools. Seems the pins are bent inside so it never bottoms out or makes a connection. Second one does not reliably allow the tool to operate. Oddly when you pull trigger the "spot light" always comes on but about half the time the tool does not operate, except the saw tool which works every time and does not have the light feature. All 4 tools work fine with original bosch batteries. didn't expect issues like this returning for refund.UPDATE: requested return was contacted directly by Powerextra. They sent a return label and immediately shipped out two replacements both fit and work fine. Great customer support could not have asked for more. Sometime things like this happen and a good company will make it right.

We Needed extra batteries for 12V Bosch tools and lights. These did the job , except that the housing on the Bosch lights needed to be filed down a little for these batteries to stay snapped in place. That was a very simle 5 minute job that worked well, without harming the Bosch light or the fit of the original Bosch batteries. These batteries fit precisely in the tools and Bosch charger.

We have had these batteries for a month or so and so far, they operate all the devices and charge back just fine. THey were reasonably priced and do the job. Hopefully they will last...

The replaced the originals and have good power and last a reasonable amount of time. Good value if your originals are losing their charge quickly.

They don't work with my Dremel 8250. They charge up fine in the Dremel charger. They fit into the tool fine. Just could not get them the run the 8250. Makes me wonder if there is a chip or something in the Dremel battery B815-01.

Tried to slide new battery into slot of Bosch drill, but was met with resistance so I thought it was a little taller and wouldn't fit. Was packaging it up for return and thought why not give it one more try. This time I slapped the battery up with a lot of force and it clicked into place! Therefore, it's user error expecting it to slide effortlessly into place like the original. No worries. This will work fine since it's an upgrade from original 1.5Ah to 3.0Ah.

Works great!!