Okay. Little update guys.
Just measured an almost new DSL battery using a hi-precision multimeter and found that the battery fully-charged outputs 4.18v while on "zero-load" (dunno if the expression is correct, sorry) and it drops a little bit to 4.15v initially while supplying the DS (low brightness, acekard os menu). The DS stays on while the voltage is as low as 3.10v. However, at this voltage it's possible to turn it on again and it will quickly drop to an unusable voltage. I kept turning it on until it refuses to do it, when the voltage was 2.99v and after this when I tried to turn it on it simply dropped very fast to very low voltages. It's when the battery is really unusable. (but it's more than enough to keep the settings safe).
So i'm going to make a 3xAA (not AAA) battery pack mod, because i'll be able to use high-quality cheap 5000mAh AA batteries that outputs 1.4v each, which isn't a problem, because the DSL original batt outputs 4.18v, so 4.20 surely will not kill it
.
The only bad thing is, as i'll use Ni-MH batteries, i will charge them externally (i'll use 3 while other 3 are charging), so i'll lost the setting every time I replace the batteries
. I could charge them on DS because the electric current is okay, but i don't know if it's secure to charge 3 Ni-MH batteries linked in ""sequence"" (don't know how to say... it's the [- | +}[- | +}[- | +} thing).
This DSL ran bkps of games and homebrews using Acekard for 11hs, and the battery cap is 2000mAh, so i think a 5000mah Ni-MH battery will supply it for at least 24hs (at the same conditions of course). The cons are; it takes more than 36hs to recharge completely (not a problem because i will recharge them externally and will have 2 kits), it auto-discharges (discharge without supplying anything) something like 10~15% every day (at least the first 2 days) (that's the major advantage of li-ion) (not a problem also, because i will not store them for a long period o time) and of course, the "volume" of the pack. This is the only real problem to me, because 3AA batteries are huge and heavy. I decided to glue the batteries holder behind the superior screen and wire it externally. ghetto-style
. Anyway, i think it's worth. So when i go camping i could bring 3 batt kits and i'll be able to play something like 50hrs or more
. A whole week. Very useful 'cause i don't like to fish, cooking on campfire, tell idiot histories, insects, monkeys throwing shit (yeah, it's true), fruits falling of tall trees on my head, etc. So i'll just stay in my hut playing the whole week! Mwahahaha!
Later i'll post an illustrated tutorial
.
Sorry my english.