Bosch BAT414 12-Volt Max Lithium-Ion 2.0Ah High Capacity Battery

I bought the BOSCH BAT414 12-Volt Max 2.0Ah battery as a replacement for an older one, and I’m very impressed. This battery is heavy and fits well and compatible. It snaps perfectly into my Bosch 12V drill and impact driver and gives noticeably longer runtime compared to the older one—value for money. It functions as described.

Works good and holds a decent charge

I love the Bosch 12 volt line. I'm buying it piece by piece as I find good deals so I've bought mostly bare tools and several of these batteries. One little thing I wanted to clear up about battery specs so everyone knows. This is simplifying it but you get the idea. This battery is rated 2AH, amp-hours. This isn't the power of the battery. 12 volts is the (nominal, or approximate) power of the battery. The tool will draw 12 volts then depending on how hard the tool is working, it'll draw varying amperage carried by that 12 volts. If the tool is drawing 2 amps, it should run one hour. If it's drawing four amps, it should last a half hour, etc. These 2 AH batteries are pretty amazing when I compare them to the size and weight of my Dewalt 4 AH batteries, but of course those are twenty (nominal) volts. Bosch now makes a 4AH battery for the 12 volt tools, but doesn't fit in the somewhat cylindrical profile of the tools handle, and adds to the overall shape of the tool. They should theoretically last twice as long but I haven't tried them as the small size and weight is much of benefit of these tools. In summary, watch this battery's price and when it's low, buy several.

Love the Bosch drill. This was a replacement for a lost 1.3Ah battery. The 2.0 last a lot longer and had more power than the original. I have had it Less than one year and it just died, as in won't charge. The original battery still works fine and charges. I would have given it 5 stars. Now that it no longer is useful I would give it a 3 due to its short life but I really liked it when it worked. Im going to order another Bosch tool with 2 batteries for a few bucks more than the cost of two 2.0 Ah batteries.

Is as described, works great in heated jacket that it was ordered for

It is light weitgh, small and seems to be build with quality. Things you would expect from a original bosch product.

The battery works as advertised I just wished the run time was longer just as any contractor does.

In trying to find another B815-01 for a spare for the Dremel rotary tool 8240, I found it practically impossible. No one, including the many Chinese manufacturers, had a battery that would fit this tool. At 2 amps, this Bosch battery (Bosch owns Dremel now), should duplicate the battery that came with the tool in terms of operation and charge. Plus, it's cheaper than the Dremel badged battery sold elsewhere for $50 to $60.