Youme 4S Lipo Battery 14.8V 6500mAh 80C Soft Case Fit for Maxx X-Maxx RC Buggy Truggy Crawler Monster Truck Car, Helicopter, Airplane (2Packs)

4s lipo Specification 
Brand: Youme 
Material:Li-Polymer 
Cells:4S 
Voltage:14.8v 
Capacity:6500mAh 
Discharge Rate: 80C 
Voltage per cell:3.2-4.2V 
Charge Plug:JST-XH Plug 
Discharge Plug: Trx / Deans T / XT60 / EC5（optional）
Suggest charge rate: 0.5C-1C(3.25A-6.5A) 
Silicone wire:10awg 
Dimension:155*50*38mm(±3mm) / 6.10*1.97*1.50inch 
Weight :574g(±15g) / 1.27lb / 20.25oz 
Certificate:CE,ROHS,MSDS,UN38.3 4s lipo Tr plug 

Package Included 
2 packs x Youme 14.8V 6500mAh 80C 4S RC Lipo Battery Soft Case

rc car battery Fits These RC Models
Trx x-maxx
Trx maxx

This lipo can use for Arrma rc trcuk as below,but need change plug to EC5 plug or use adapter
1/8 Arrma electric off-road
kraton exb
kraton 6s blx
outcast 6s blx
notorious 6s blx
talion 6s blx
typhon 6s blx

1/7 Arrma electric
mojave exb
mojave 6s blx

1/5 Arrma electric
kraton exb
outcast exb
outcast 8s blx
kraton 8s blx
Note:Not compatible with electric mobility devices (e.g., e-bikes, e-scooters)

Please Notice
1.Only if voltage, dimension and plug match, then it will fit 
2.Please stop charging immediately when cell voltage up to 4.2v,Never leave battery unattended when charging (Normal cell voltage is 3.2v~4.2v) 
3.To double make sure safety, please have a check first whether the battery surface and voltage is normal before using 
4.If new battery won’t hold a full charge or loss charge very quickly in short time, please use Balance Charger to charge and recycle several times first.

FAQ
Q1: Can I use this with my Arrma Kraton 6S that has an XT90 connector?
A1: Yes – use an adapter from your chosen plug (EC5/XT60) to XT90, or solder a new connector. Verify polarity.

Q2: What charge current is safe?
A2: Set charger to LiPo balance mode, 4S, and charge at 3.25A–6.5A (0.5C–1C). Never exceed 6.5A.

Q3: Battery gets warm after running – is that OK?
A3: Mild warmth (40–50°C) is normal. If too hot to hold or swollen, stop and check your gearing/ESC settings.

Q4: Which discharge plug should I choose?
A4: Match your ESC plug – TRX for Traxxas, EC5 for most Arrma 6S/8S, XT60 for many aftermarket ESCs. Choose the closest match.

Q5: New battery shows uneven cell voltages – defective?
A5: Likely not. Balance charge once at 0.5C; cells should equalize to 4.18–4.20V. If still >0.1V difference after two cycles, contact support.