[Upgrading, Modifying and Unlocking] plasmar:
Attempt 1) 2x cells off the 2700mAh battery and 1 cell off the 2000mAh

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With the 2x batteries off the 2700mAh battery and 1 cell off the 2000mAh I was getting about one day of charge on average with the Axim not doing much with 8gb SDHC card and 32gb CF card:P(I had noted 12 hours about previously but it seems to have been highly inaccurate, either due to me doing a soft reset and the thing buggering up or system clock change of sorts.... sorry for any excitement I may of caused;))

upon doing a bit of research I've discovered that the Lithium Ion battery specs weren't exactly 100% accurate:

Cameron Sino 3600mAh x51v 3rd party extended battery – 3 cells, 900mAh per, 2700mAh(3x900) total

Generic 2000mAh Tungsten/PalmOne 3rd Party battery – 2 cell, 850mAh per, 1700mAh(2x950) total

Cameron Sino 2700mAh Tungsten/PalmOne 3rd party battery – 2 cell, 950mAh per, 1900mAh(2x950) total

conclusion, was that its best to go with the Cameron Sino 2700mAh batteries regardless of them being labeled as 2700mAh and being 1900mAh as the original cells in the cameron sino 3600mah x51v battery are 900mAh each and the cells from the cameron sino 2700mAh tungsten battery are 950mAh each.... using 850mAh can and probably would cause all sorts of problems and also cause a lot less battery life...

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Anyway as of Sept. 10, 2008 here is the revised list of things needed

Actual mod materials/tools:

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note- this is NOT in order of importance and I would suggest you have everything listed

1)	a) Dell Axim x51v

b) the guts to do this, the understanding that if you mess up its your fault and only your fault…. You understand that the original guy who did this lost an axim x51v while trying to do this mod….. yada yada yada yada…. All attempting to do this project are at your own risk….. in fact I advise no one try it :D, that way I can remain exclusive;)

2)a) 2x Cameron Sino 2700mAh Tungsten C / W / Palm/ PalmOne i705 batteries(cost about 13$+shipping per, I got them off ebay)

b) 1x Cameron Sino 3600mAh x51v extended battery (about 15$+shiping)

c)(important change!)copper strip tape/wire, and thin gage stranded 0.5-0.7mm(about size of lead from a mechanical pencil) or slightly thicker..... avoid using cat5 or solid wire that doesn't easily bend as it is quite useful to bend the wire around obstacles, and using solid non stranded wire can cause you to rip out contacts, components, ext.

d) thermal fuse from original stock 1100mAh dell Axim battery

3) a) Magnifying Florescent light(warning some of these can damage electronics, make sure the balast is not in the lamp/magnifing portion of the light, rather it is in the base of the light or on the wire in a pack of sorts)

b) Digital Multi Meter, pliers, micro/jewelry tool set, torque screw driver(not sure the size, some replacement parts for the axim include one as a bonus item though:P)

c) Soldering Iron(I wouldn’t use a radioshack cheapo soldering iron unless you that damn skilled….. I used a Weller WESD51)

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Misc stuff that maybe handy:

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Super glue, tape, permanent marker

Finish up materials:

1)	plastic glue, epoxy, see thru plastic tape, or duct tape(if you use duct tape you require nothing else):P

(I’d advise holding the lid on the back with some see threw tape(all around where the glue may seep threw) and gluing the lid from the inside of the back of the Axim x51v case, to avoid making the outside ugly(don’t put to much glue because if you do, you will have to grind/sand it off like I did)…. I try to use plastic glue, I couldn't find any so used generic 5 min epoxy…. I’d advise not using flexible plastic glue as that will be crappy, and likely not last to long :P

Later I will hopefully give some better instructions on how to do this all and what I think are the best procedures

for the meanwhile, heres some misc. notes:

- do not solder the axim with the adapter plugged into an outlet, a lot of soldering irons are grounded using earth ground while the Axim is not, the difference between earth ground and the axim's grounding can itself cause permanent damage.(this is the same with many electronics)

- avoid charging the lipo batteries till you are completely done(check things over before you close the case, be careful with wires/contacts you've soldered but try and check things over to make sure you hooked up everything right:P).....

- if for any reason either, one of the batteries wasn't connected or had to be replaced.... connect all the batteries in parallel and then allow them to balance their charge for atleast 30-60min(I left mine over night)

- when taking apart the batteries after buying them I'd avoid using any tools at all till you get to needing to cut wires(alot of it is held together with tape, unsolder what you can if needed

- avoid shorting the leads of the battery cells(old and new), it can cause damage to the cells or cause all sorts of possibly dangerous problems

-when disposing lipo or lithium batteries either take em to a battery disposal place or atleast put tape around the contacts so that they don't short....

- when soldering the batteries try and be quick as to not overheat the battery:P.....

- Its a good idea to put tape on the circuit board where the battery rests or plastic to avoid possibly shorting any circuits/contacts....

-To remove the original stock contacts thing on the circuit board either cut up the plastic and slowly unsolder it in pieces or if you know what your doing use a heat gun, I myself didn't use a heat gun cause I didn't want to risk melting the ZIF's that near it.... if you use one I'd suggest a digital one to monitor and control the temperature....

- the digitizer zif opens/closes in and out to tighten/loosen the digitizer ribbon.... the lcd zif opens/closes upward to loosen/tighten the lcd ribbon... neither ZIF comes apart, just the ribbon slides out....

- be careful when closing the Axim casing, make sure that the hold switch is in the right position as to not break it(if it does break note that there is software locking, otherwise I think they're 450-1577-ND on digikey :P)

- if you do this mod its suggested that you also do the battery switch mod so that the Axim doesn't ever complain about the back cover being off

- for people who haven't gotten their soldering skill up yet... its best to: 1) use the smallest tip you can..... 2) tin the wire(tin the lead if it doesn't have solder yet) and then clean the tip, then proceed to solder the wire to the lead