Smedic58 Posted September 12, 2019 Share Posted September 12, 2019 Hi all. I've recently bought a second hand Tokyo Marui P90 which I'm really pleased with, but it came minus it's battery. I have two types of LiPo batteries, both VP airsoft. One is a LP308 - 1450mAh, 7.4V, 25C, 10Wh. This powers the gun really well but doesn't fit 'cause it's physically too big for me to get the buttplate on. The other is a LP301D - 1300mAh, 7.4V, 25C, 8Wh. This fits fine, but the guns fuse blows whenever I try to use it, which seems a little weird 'cause it's the least powerful of the two batteries..?? The only difference between the two is that the LP308 has a mini tamiya connector, and the LP301D has a deans so I'm having to use a adaptor to fit it to the gun. Could the adaptor be the issue.? I'm completely stumped.....Any help would be very gratefully appreciated..!!! Link to comment Share on other sites More sharing options...
Philby21 Posted September 12, 2019 Share Posted September 12, 2019 This might seem like a silly question but does the adapter match the polarity correctly? The capacity rating shouldn't make any difference, just a larger one will last longer. Link to comment Share on other sites More sharing options...
EDcase Posted September 12, 2019 Share Posted September 12, 2019 This is strange indeed. I would cut off the Tamy connector and fit a Deans to eliminate the adaptor. Then see what happens... Link to comment Share on other sites More sharing options...
Smedic58 Posted September 12, 2019 Author Share Posted September 12, 2019 Philby21 - It's not a silly question at all......in fact, you were spot on..!! To be fair to myself, the reason I didn''t notice is that the polarity matched at the battery end and the wires at the gun end are predominantly black with only a small red stripe to indicate the polarity. All is now well. many thanks for your help..!! Link to comment Share on other sites More sharing options...
Philby21 Posted September 12, 2019 Share Posted September 12, 2019 Glad I could help and very glad it's such a simple (cheap) fix! Link to comment Share on other sites More sharing options...
Smedic58 Posted September 12, 2019 Author Share Posted September 12, 2019 Yeah......could've been more expensive but for the fuse...!!🙄 Link to comment Share on other sites More sharing options...
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