JG M4 CQB Battery Problems/idea

[Jersey Tactical Airsoft]

Hi well this was my first rifle so maby i have not treated it as well as i should of but the crane stock type battery has lived its last day

But what i was wondering was is it better to buy another crane stock type (which will most likely get broken again due the the wires getting nipped inside the stock) or to invest some money into it and wire it to the fount and get a PEQ box for it then eventually replace the stock with a tactical one?

At the moment this isn't my primary weapon but i would like to get it working just in case i go to a CQB site (which i am looking forward to doing)

Thanks for any advice