![dewalt dca1820 18v to 20v battery adapter dewalt dca1820 18v to 20v battery adapter](https://i.ebayimg.com/images/g/RzYAAOSwICJcsWXA/s-l640.jpg)
This puppy has the same cells in it, so it's scaling C rating 5X now to provide up to 100A. We will never draw more than the 30A the drill pulls. The 4Ah 20V MAX battery caps at - lets assume same cells same C rating - so 40A. The BMS in the battery should mitigate this and cut out. The drill is going to abuse the battery and will underperform.
![dewalt dca1820 18v to 20v battery adapter dewalt dca1820 18v to 20v battery adapter](https://i.ebayimg.com/images/g/YQcAAOSwEwtlSKAD/s-l1600.jpg)
We'll just work with 18V across the board here but obviously is variable.Īssume (for the science) that the little 2Ah 20V MAX battery caps at 20A. I've done LOADS (lol) of work with brushless motors and lithium packs, however brushed motors might be funkier.Īssume that the DC988 can draw up to 30A at 18V. Maybe someone can refute my comment with harder science, I'm glad to see it. I appreciate your comment but that doesn't really add up. Thank you for the answer /r/dewalt ! I bought some 5Ah cause they were still on sale. So the pack won't stop the chooch till it's too hot. I should note that the 6Ah fits my other 20V tools just fine.Įdit: see the concise explanation by u/shiznoroe88 - the adapter has current limits that the bigger packs could theoretically overcome because, as u/hyperduc mentions, there is no current limiter in the BMS and the battery terminals are directly connected to the tool. Anyone with a more well funded tool habit know what the deal is? Should I return the 6Ah packs and go for 5Ah? I tried to explain that the solution is more power tools but she insists that we just sort out the batteries. I can't be the first one to encounter this. Surprise! □ My wife: "It's supposed to work.
![dewalt dca1820 18v to 20v battery adapter dewalt dca1820 18v to 20v battery adapter](https://www.dhresource.com/0x0/f2/albu/g11/M01/61/10/rBNaFV8VRS6AKuXXAALB5ByRgFE604.jpg)
They said its intended to be compatible with all but two prohibited drills (DC970 or DC759) I don't own and ALL 20V MAX batteries. I called DeWalt service and they were baffled. I've since noticed that there is a profile on the battery that is common in the 6Ah through 10Ah packs, a profile that obstructs the insertion of the DCA1820 adapter. So, imagine our disappointment when I opened the box like a kid on Christmas day and the pack doesn't fit the adapter! And she knows I have this DC988 that needs new batteries but I stubbornly refuse to buy any more 18V XRP packs. My awesome wife bought me some 20V batteries because, well, she's awesome.