Batteries are the one item that is always disputed with s/hand re-con stuff
YES this is new item but it is produced by a third/forth party
Patrol-Base or JG don't make the thing, it is made as I said as a cheap $hit £2 battery
and many places can/will not guarantee these piles of poop
They are in effect a freebie to get you started - the charger is crap
a smart charger turns off when the correct voltage is reached - these plugs do not
so there is risk of over-charging the battery and that might be an argument to refuse to offer a gurarantee
they could claim you may have over charged it, if challenged about consumer rights & crap
but in reality - nah it was $hit to begin with and not worth a w @ nk tbh
Hence my suggestion of seeing if you could borrow another battery first before sending the gun back
Reality is that buying batteries from Airsoft shops- they put on a tidy mark up
there are other places to buy 7.4v LiPo's from like HobbyKing etc....
A G36c uses a block type battery - quite small in size
about 34mm wide x 18mm thick x 106mm long
this "could" be stretched to say 36 x 20 x 115 BUT DO NOT QUOTE ME ON THIS !!!!
You can obtain a very cheap 7.4v block Lipo....
https://hobbyking.com/en_us/turnigy-nano-tech-1800mah-2s-25-50c-lipo-airsoft-pack.html
Dimensions: 103x13x35mm
so "should" fit but offer no guarantee, but can't see why not tbh
cheapy B3 charger charging through balance lead -so no hassle charging it
though a B6 is much faster charging, but need to ensure adapters from banana/deans to small taimya
Or if you are sad and get into it you can other batteries at nearly a fiver when on sale, use deans, B6 charger etc....
BUT we are getting carried away here - first you should try to test it on another battery
before shipping it back coz it seems f**ked
could be f**ked but quite likely the battery supplied is shagged and won't be guaranteed
if you was local I'd send a few piles of crap batteries chucked in some china guns
they are never great and not worth a w @ nk as I said
Most of us have ditched nimah and gone LiPo
and think 99.9% of us won't bother with those freebie batteries - they get tossed to one side/bin
BUT YOU SHOULD SEE IF YOU CAN TEST GUN FIRST BEFORE YOU DO ANYTHING
Usually the battery supplied is crap and won't really be guaranteed no matter what you argue
so try another battery from a m8/club if you can first if possible is the best advice