Re: Got 4Ah, not 5Ah, battery 18V (20V) - done right thing?

Clare Snyder <clare@snyder.on.ca> writes:

On Fri, 17 May 2024 11:19:08 +0100, Richard Smith <null@void.com>
wrote:
>

Hi Clare, Jim, everyone.
These are DeWalt powertool batteries - 18V (20V?).
This characteristic you identify "1C" etc. becomes knowable?
Rich S

  If it is a MAX it is a 5S x 2P pack running LG HB4 1865 LiNiMnCoO2
cells rated at 1500Mah with a max current of 30 amps which is a 20C
rating!!!.
>
I strongly suspect the 5Ah pack uses higher capacity cells - which
ALMOST ALWAYS means lower max current rating - so you likely made the
right move.

The 5Ah battery is physically bigger.  So likely has the same "duty
severity" as an other Ah size in the range?
Anyway, I will take that bit that I might have made the better choice
getting the 4Ah battery :-)

So yes, as replied previously, these are DeWAlt XR 18V 4Ah batteries
https://www.dewalt.co.uk/product/dcb182-xj/18v-xr-4ah-battery


Just as a bit of perspective - having been using these batteries in the
DeWalt DCH263
https://www.dewalt.co.uk/product/dch263n-xj/18v-xr-brushless-28mm-sds-plus-hammer-drill-bare-unit
for drilling about 70mm deep sockets 12mm (or 14mm) dia into hard
granite
(airleg / jackleg rock-drills need to use a simple single-cutter
drill-bit (like a big masonry drill) - not star-drill or button-bits -
I've seen that being likewise on a modern drill at a commercial mine in
the area)
doing a competent job - what that means relatively came to me when I
was drilling a brick wall for a friend to put up shelves - I could
barely restrict the power of the drill low enough to not "shoot"
straight through the wall before you could stop it.
So those 4Ah batteries doing a fair number of sockets in granite for
feathers-and-wedge is "not insignificant".

One intention being worked here in Cornwall is quarrying for lithium
minerals...  Some of the granites have lithium-mica.  To make
batteries...