Just to add to this - I have done a little research on what is available in the UK
OEM G1 Battery is – Panasonic DMW-BLB13E – 7.2v – 1250mAh - 9.0Wh – Li-ion – Made in China – notice the E on the end of the reference
OEM replacements seem to range from £55 to £100 - some with, ........ some without the E
after market range from £14 to £30 – and most are marked 1300mAh, (not 1250 as the OEM one is), - I have not seen any with the E - all I have seen are marked 13 NOT 13E
All are made in China
Question: Maybe most of the aftermarket ones DO NOT work with Firmware version 1.2 and above – some vendors clearly state that their batteries ONLY work with firmware 1.1 or earlier
Can anyone comment – is the E to do with firmware 1.2 upgrade
Does anyone know the difference?
Amazon list a few
The battery sites on the web have them
The crafty ads do not let you see the spec side of the Battery
I'm not sure what the current state of play is wrt 3rd party battery compatibility - I have the feeling that there are some manufacturers who've overcome the Panasonic protection... as for the rogue firmware - this was a mistaken release with the battery protection not enabled... I don't expect Panasonic to make the same mistake again.
Ordered a Panasonic battery for my G1 from
<a href="http://www.newworldvideodirect.com/" rel="nofollow">www.newworldvideodirect.com/</a>
and they called to say that they were back ordered. They offered a 1500ma battery but I said that I was worried about incapability. I was told that the battery manufacturer had the chip and that it would work.... well guess what...
I use the battery from bestbatt.com in my GF1 and it works great and is priced well. Guaranteed with all firmware versions. This is also a very reliable company to work with. Another thumbs up to this:
Yes, always cheaper in the U.S. The link to bestbatt works out £3.50 cheaper than Amazon when you include shipping to the U.K., so not a big saving, but a longer delivery time. Hope you find the one off Amazon ok, going to order one myself.