"ps56k" wrote in message
...
Son just picked up a refurb Dell M1210 and likes it a lot compared to our
Dell C610's..
It came with the Dell battery - NF343 - 11.1v 53Wh

wondering where to go get the bigger brother, as backup,
and the model number compared to the NF343

--
it's interesting how battery specs are tweaked
to show more power.... even Dell -

ie -
Dell CG039 battery lists as 9cell @ 85Wh
the "key" is what is used as a base voltage - 10.8 vs 11.1-
which is interesting as most all rechargeables list as 1.2v
9 x 1.20v = 10.80v
9 x 1.24v = 11.07v

11.1v x 4800mah = 53Wh (NF343)
11.1v x 7600mah = 85Wh (CG039)

Other battery vendors -
10.8v x 6600mah = 71Wh
10.8v x 7200mah = 77Wh