1. Keylitho

    Keylitho Newbie
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    In parallel they level each other out.. Only in series you have to worry about that... That is when balance charging comes into play.
     
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  2. Bazahazano

    Bazahazano Member
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    Would it be possible to to charge eneloop batteries (or similar) with that usb charge board? and have them in the battery compartment as normal.
     
  3. Dend

    OP Dend Member
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    You could if you can find the space in there. But id weigh the effort that it takes, vs the benefits.
    If you would be setting up more than one battery u gotta be careful; like Keylitho mentioned, they need to be set up in parallel (otherwise you have to worry about load balancing; remember LIPo batteries BUUURN).
    I have been trying lately with a 650 mAh battery as it requires virtually no cutting whatsoever, and it lasts more than enough time (with my playing habits, i charge it less than once a week).

    Good luck!
     
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  4. Bazahazano

    Bazahazano Member
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    Thanks for the reply

    Ok it sounds like my thought was not a good idea. Those eneloop style batteries in parallel would not have enough voltage either.
     
  5. Bazahazano

    Bazahazano Member
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    I have used a SMD Schottky Diode (MBR0520 Not sure of the exact model) as it has a lower voltage drop than a regular Diode and I am assuming a lower power draw from the battery.

    I measured 4.04v from the battery terminals and 3.78v from the diode giving a drop of 0.26v. This get the voltage below 3.8v which appears to be the upper limit for the AGB-001.

    I have a TP4056 with battery protection circuit. I have modded the PCB by cutting the track between B+ and OUT+ this isolated B+ from the circuit allowing me to install the diode between the pads. This means that B+ and OUT+ are now swapped around and the battery will still receive the full voltage when charging. This approach means that I don't need to have a diode overhanging from the PCB and makes it a little neater.

    IMG_20180227_210502.jpg

    I apologise for the mess of wires and bodging it's still a work in progress. I'm waiting for my battery packs to turn up going to use two AGS-101 battery packs in parallel as I have seen done by Keylitho. (Thanks for your great video).
     

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  6. menehune23

    menehune23 Newbie
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    Burning question: with the diode you chose (1N4001), does the GBA’s power indicator still give you a good amount of warning time? I.e. How long from when the light turns red have you been able to go?
     
  7. kichi

    kichi Newbie
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    ngl i didnt read whole thread, but on many sites there are versions of this you can just buy and attach. if you dont feel like soldering a battery :P
     
  8. MrTrynex

    MrTrynex Newbie
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    Hi! You mentioned you did the battery mod with TP4056 for Vita. Can you pls tell me how it holds up over time? I have read there are many issues using not OEM batteries in Vita so I thought using TP4056 between battery and board could work. With this setup you always have to turn vita off when charging correct ?
     
  9. gnmmarechal

    gnmmarechal GBAtemp Guru
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    Yeah, that's me! Well, it still works, yeah. You don't necessarily have to turn it off whilst charging, buut well, the Vita won't know it's charging. But yeah, still works just fine.
     
  10. MrTrynex

    MrTrynex Newbie
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    Thats great to hear! Would you mind describing how you did the mode or sending some pictures of it? How much capacity does your new battery have? Im sorry about many question I just dont want to brick my vita or something. This is how I imagine it in my mind: New battery without protection board is connected to TP4056 to battery +- pins. Then to TP4056 is as out is connected the original protection board from original battery( I have read that vita wont like if you dont use OG protection board). And then the OG protection board is connected as usual to the vita via cable. Is this correct?
     
  11. gnmmarechal

    gnmmarechal GBAtemp Guru
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    Oh, I haven't changed the battery. It's still the original one, connected to the TP4056. I'll see if I can find the pictures I took back then

    — Posts automatically merged - Please don't double post! —

    IMG_20201027_010123.jpg IMG_20201027_010115.jpg IMG_20201027_010106.jpg IMG_20201027_010058.jpg
     
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