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Author Topic: A LOOK INSIDE DeWALT'S DCB200 20V MAX LITHIUM ION BATTERY  (Read 2193 times)
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DEWALTDUDE
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« on: July 22, 2011, 03:39:59 PM »


DEWALT IS USING SANYO UR18650W2 CELLS IN THE DCB200 BATTERY.
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Aprelia
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« Reply #1 on: July 23, 2011, 12:19:58 PM »
Well, that was kinda obvious before they even released the press release -  Sanyo was their bet.

UR18650W2

http://www.simpower.co.nz/shop/images/UR18650W.pdf
http://www.alibaba.com/product-gs/346921912/Sanyo_18650_UR18650W2_high_Power_cell_.html

Cells are about $4-$4.75 a piece (that's Dewalt's cost). Passive components inside are 20 cents, and the connector and shell are a couple of bucks. I haven't seen MSRP but I predict they will be $79.99 a piece or $129.99 for 2-pack in NA.

Charge rate is 1C which is good.
Discharge is 10C or 16A, yielding ~32A per pack - comparable to Sonys in Makita, not impressed but "OK".

I'm personally "Okay" with this battery. Cycle life is probably crap, but given the fact that it's 3Ah+ and much cheaper than A123 based batteries, it's a cost-effective solution. It's like using Ryobi NiCd batteries in Festool tools.

If anyone is thinking about rigging and adapter to use it in old tools - forget about it, the new batteries don't have a low voltage cutoff circuit and you will ruin the battery on first discharge.
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blubricks
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« Reply #2 on: November 14, 2011, 11:39:38 PM »
Sorry, I'm new, and after taking a further look into your site...my post wasn't necessary. Thanks.
« Last Edit: November 15, 2011, 12:32:50 AM by blubricks » Logged
tmccarty
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« Reply #3 on: November 19, 2011, 07:34:23 PM »
Why use a lower quality cell in the 20v max fat pack (3.0ah) than in the 20v max compact pack (1.5ah)?

trying to generate cost savings to the end user?
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