whats wrong with my battery?

Discussion in 'General Airsoft Discussion' started by newbieairsoft123, Sep 25, 2012.

  1. newbieairsoft123

    newbieairsoft123 New Member

    Its an 8.4 volt 900 mah NiMH. Rechargeable Battery pack it came with my a&k m4 s system. I charged my battery for about 4 hours yesterday and I went in my backyard today and only shot for about 45 minutes and my gun stopped working when I took the battery out it was pretty hot I think I need a new battery? And a smart charger. can I upgrade my battery or can my gun only use 8.4 volt batteries??
  2. Ze_Glocksman

    Ze_Glocksman New Member

    You can upgrade batteries. Just make sure you can fit it into the hand guard on your gun. And yes you do need to get a smart charger before anything else. If you go lipo, you will need to get a lipo charger as well. But seriously- get a smart charger. Also you may want to check your fuse on your gun- you probably blew it out and that's why it's not shooting.

  3. bal1

    bal1 New Member

    I would get deans, and a new battery.
  4. Shiftyshooter

    Shiftyshooter Learn from your mistakes. Lifetime Supporter

    If we use the general rule of thumb, a 900 mAh battery will only last for about 900 shots. Which takes about those 45 minutes of a noob shooting around his yard.
  5. Username94

    Username94 New Member

    New York City
    What shifty said. If you went through almost 900 shots, especially on full auto, then expect your battery to die.
  6. 703

    703 Active Member

    I would still recomend getting a smart charger as well as a new battery.
  7. Bulldawg26

    Bulldawg26 Active Member

    What 703 and Shifty said...........I would also suggest getting a higher mah battery. You can easily get one with a 1600 mah. You'll be able to play a lot longer on one full battery charge.
  8. Bulldawg26

    Bulldawg26 Active Member

    Definitely dump the wall charger and get a smart one.
    Last edited: Oct 14, 2012
  9. vfcfan

    vfcfan New Member

    Best decision I ever made.
  10. Dead Eye

    Dead Eye New Member

    and stop shooting so much! I can see target shooting but if you are going to the point where your Battery is hot then the gears will wear and the motor will get hot as well. take it easy.
  11. Lefse

    Lefse Well-Known Member Supporting Member

    Ditch that obsolete ni-mh battery and get yourself a high quality 2 cell li-po and a reasonably priced li-po balance charger for it. Hobbyking is a popular and good retailer to buy batteries and such. And definitely upgrade to Deans or XT60 plugs, Tamiya plugs are garbage.
  12. Bulldawg26

    Bulldawg26 Active Member


    Yep. Ditch the tamiya plugs for deans. Lipo batteries are a good choice if follow a few safety rules. Don't let the battery discharge to below 3v per cell. Many stores sell an alarm that attaches to the battery that warns you if the voltage gets too low. Don't let a 7.4v (2cell) lipo get below 6v. An 11.1 (3cell) lipo doesn't need to get below 9v. You will want a discharge rate of 20-25c.

    If you go lipo, I would start with the two cell 7.4v lipo with a 20c discharge rate. I would also get a battery with as much mah as will fit in your gun. Typically, lipo batteries get larger as mah increases. Most people I play with use either an 1800-2200 mah 7.4v battery.

    A good thing about lipos (in my humble opinion) is that they tend to hold their charge longer than nimh batteries. They also last through more re-charging cycles. Although you do have to buy a balance charger to use lipo batteries, your long term cost with lipo batteries should be less than with nimh. Just my 5¢ worth.