Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

I would hazard a guess that there's been a breakdown in communication between China and this seller, a 24,000mAh battery at 5v that weighs 220g, is the same size as a wrapped cable, and costs £12, just isn't happening. It's probably 2,400mAh, and even that'd be pretty impressive for the device's cost.

As a reference point, this is a proper 21,000mAh at 5v battery pack..
http://www.firebox.com/product/2258/...orilla?via=ser
It's several times larger, three times heavier, 10 times the price, but is real.

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

As a rule of thumb, if it is supposed to refill the battery 17 times, it should be at least as large as 17 batteries.

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

I am looking for a portable charger that uses AA batteries. Using AA batteries really makes that charger usable, I can use my camera batteries when required.
portable charger is something needed while traveling, well atleast for me, so keeping 2 to 4 pair of AA high end batteries can suffice the camera as well the great n900.
Has anyone tried that. I was googling it and found:
http://www.amazon.com/Datexx-Power-B.../dp/B001F0REXU
The reviews tell the story around the voltage thing, normal AA 1.5 V X 4 is 6, does not with iPod/iPhone.
But 1.2 V NiMH AA batteries should work with N900.

Also one thing, N900 battery BL-5J 1320mAh.
And 1 NiMH batteries comes in 1300-2900 mAh, Does that mean 1 AA battery is equivalent to BL-5J?

if that is true, that is great, I can keep 3-4 pairs of fully charged AAs in my luggage and never go out of power on my n900.

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

No AA nimh battery will genuinely be 2900mAh, especially not when used in any 1-4 cell charger.

When comparing batteries it makes more sense to compare the energy:
1.2V * 2000mAh = 2.400Wh
3.7V * 1320mAh = 4.884Wh

Considering that there are significant losses, you'll need atleast 3 AA nimh batteries to charge BL-5J.

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

once again did anyone tried to use powermonkey-eXplorer ( http://powertraveller.com.au/product...products_id=68 ) with n900?
does it charge directly from solar panel or only via powermonkey or it doesnt work at all?

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

The Power Monkey works fine with the N900. I find it best to charge the PM with the solar panel, and to then use that to top up the N900. IIRC the PM doesn't come with a micro-usb adapter.

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

Just pointing out the IMP880 works well. :)

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

I have this one, and it is great !

http://cgi.ebay.com/ws/eBayISAPI.dll...m=310229055930

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

Can someone report if they have used this device ?

http://www.youtube.com/watch?v=XUnwI...layer_embedded

Looks like it's a nice little human powered charger.

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

The link dosen't work anymore.

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

lol.... i am using raikko akku pack... it charges the n900 up to 5 times


http://shop.consolendesign.at/produc...Pack-5200.html

Re: Alternative Energy Sources for N900 (for when you need that extra power)
 

I just tried the Proporta USB TurboCharger 5000 World Pack
( https://www.amazon.de/Proporta-Turbo...1801695&sr=8-1 )
and it does not charge the N900. :-(
The N900 does not charge when switched on.
It does start to charge if N900 is switched off but the orange indicator LED only blinks 3-5 times, then the white moving dots appear and charging stops, the whole cycle starts again after some time - does anybody know what this means?

I also tried the "Just Mobile Pro" ( https://www.amazon.de/Just-Mobile-Po...1801756&sr=1-1 ) and it also shows the same behaviour.

Is there any external battery pack that charges the N900 for certain or gives even power when the N900 is switched on?

Is there some way to tell the N900 that it should start charging even with lower voltage?
Some configuration in /etc or similar?