Daystate Battery Question

Forums PCP Airguns Daystate Battery Question

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    DBrickashaw
    Participant
    Member

    Does anyone know how to externally charge a daystate battery? My Airwolf wont turn on and I want to determine if it is the board, charger or the 1 month old battery that is failing. I can’t find any info on what type of connection the batteries use so any tips on charging the battery outside of the gun would be great. 

    Side note the new battery is the 8.4 authentic Daystate battery provided directly from AOA not some self made work around battery. 

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    Michael
    Keymaster
    Keymaster

    Mine came with some instructions.  Here's how I got it to charge.

     

    If it's the latest 2 cell battery; there are four pins on the charger and three pins on the battery.  I connected the battery using the three pins on the right side of the charger and it should show two cells being charged.

    And here's some pics to explain the indicator lights

    • This reply was modified 2 months ago by Michael.
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    491458
    Participant
    Member

        I had an issue with my battery where I was not sure if it was the battery or something else. I went to Daystates web site and went to contact us asked them and within 24 hrs I received a response and that was on the weekend. 

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    jps2486
    Participant
    Member

    These batteries are the same type as used on model aircraft.  Its a 2 cell 1000 mah  lithium ion battery.  Theres a myriad of chargers for these, but you need one that charges the cells individually thru the balance plug.  Hobby King has one.

     

    https://hobbyking.com/en_us/7-4v-usb-charger.html

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    fe7565
    Participant
    Member

    I wasn't aware that the new Daystate batteries are Lipo and not nickel–metal hydride battery anymore.   My bad.   

    If that's the case, the lipo battery is 8.4v and called a 2S in RC hobby, meaning two 3.7V cells in series.  Each cell is rated at 3.7V, but has a charging curve of 3v-4.2v.    If the battery's voltage falls below 3V the battery's internal circuit disables it to prevent it from damage. It also disables charging if the voltage drops much below 3v….like 2.8V and below.   

    The lipo requires special lipo charger, cannot use a regular nmih or LiFe battery charger.  The 2s lipo need a balanced charger which charges each cell separately and evenly.  That's why it has 3 prongs, one for ground and two for voltage for each cells.  The charger cuts off at 4.2V charge for each cell.

    You should still be able to test your rifle by using a 9V battery briefly, because the circuit board must have a voltage regulator down to 5V (or 3.3V) which are the normal voltages for microcontroller electronic circuits.

    So your charger may be bad.  Or you charger connections going to the battery are lose.  Or the battery went way below 2.8V and the charger won't kick in. Either way to do any troubleshooting you must be able to read the voltage on the battery pins. And go from there. 

    If the lipo is dead, the "dead" lipo can be recharged by raising the voltage in it to at least 3V level so the charger will "recognize" it again and allows charging.  One way to do that is to take 3V-3.3V from another battery to each cell and slowly build back up the voltage to above 3V inside.  Do not use much higher voltages or it could damage the battery. 

     

     

     

     

     

     

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    aa_limited
    Participant
    Member

    I have an air wolf too.. can you take a picture of the labels on your new battery as well as the old one. that would be of much help to me too

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