ZIPPY Flightmax 4000mAh 2S1P 25C Car Lipoly (ROAR APPROVED)

2 year plus update Link

I heard really good things about this pack and with them being the cheapest hardcase packs ($15.50) on hobby kings site I just had to give them a try and see what they were made of .
Well I started by checking the voltages when I got these in . One pack was at a little down with cell 1 at 3.84 and cell 2 at 3.85 . The second pack which by the warranty number was a bit newer was at 3.86 on both cells so in my opinion things looked pretty good from the start . I then solder on a couple of dean's style T-connectors and proceeded to charge the packs up . After handling the wiring harness a bit I decided I didn't want to use the stock harness for running in my car or for fast charging and made 2 more harnesses minus the balance plug as it could be damaged . After the packs got done Balance charging I decided to take them for a spin and yes virginia these packs do have some punch dare I say more than the Turnigy 30C 4000mah packs I tried hmm further testing is needed because despite feeling Zippy these packs did warm up a hair bit but that may be due to this being there first outing . After I get a few more cycles on these and the Turnigys I will be updating these post .

This pack has a Relative Amp 25C x 4A = 100rA 
$15.50 / 100rA = 0.155cE the lower the number the Cost Effective




Where to buy it
ZIPPY Flightmax 4000mAh 2S1P 25C Car Lipoly (ROAR APPROVED)


Manufacturer description:

 Zippy FLIGHTMAX batteries deliver full capacity & discharge as well as being the best value batteries in the hobby market today!

Spec.
Capacity: 4000mAh
Voltage: 2S1P / 2 Cell / 7.4v
Discharge: 25C Constant / 30C Burst
Weight: 235g (including wire, plug & shrink wrap)
Dimensions: 138x47x23mm
Balance Plug: JST-XH
Discharge plug: 4mm Bullet-connector to your own custom plug

UPDATE Latest stock has improved soldering and tab joins. Removing previous issues related to 'cold solder' breakages.

Now officialy approved by ROAR for race use!

PRODUCT ID: Z40002S-25