X41 Tablet battery weight??

[RRHODY]

New to the X41 Tablet; so far I'm impressed. Main use will be as a GPS/MAP program in vehicles [and then internet after stopping]. I'll be using a DC adapter in the vehicle, but I'm wondering if there is a smaller lighter battery than the 8 cell my unit came with. I know I could probably use it without a battery to reduce the weight but I would like to keep a battery in it as an UPS if the DC stops. Was there an original, like a four cell? It seems like wanting smaller is not the popular direction - all the batteries I find are 8 cell, which I already have.
Any suggestions or leads will be appreciated - thanks.

[sjthinkpader]

The 4 cell battery is rare but you should be able to find one eventually.

[loyukfai]

There's at least one 4-cell available on eBay as of writing. I could even sell you one if you're interested (PM me).

Cheers.