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Specific Rechargeable Batteries For Ez-B V 4 Controller

Hi I was wondering if there is a specific rechargeable battery that the ez-b v4 requires? I see on amazon that the rechargeable batteries are either Rechargeable alakline, Ni-he or Ni-Lith but I'm not sure which type to use for the ez-b v4 controller to maintain proper charge and damage control for use on the servos any ideas on which batteries to buy?

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#1  
LiPo 2s (7.4v) rechargeable batteries provide the best performance.
Something similar to the one from the EZ-B store will do, just keep in mind the higher the mAh, the better it will perform under load, more play time also:) .
#2  
Also the V4 no longer have built in voltage regulator. If you want higher voltage like 12v, an external regulator will be needed. Or can play it safe and use a 7.4v that can easily support servo and sensors. But certain sensors like the HC-SR04 only play nice with 5v, that's where you datasheet come info play:) .
#3  
Ok and So would you recommend using 1100, 2800 or 3000 maH batteries for safe use?
#4  
If 3000mAh is in your budget by all mean go for it. Higher amperage equal higher play time. A battery’s capacity determines roughly how long a battery will last at a specific voltage given a specific discharge rate. 3000mA = 3000/1000 = 3Ah...
It mean your battery would provide 3amp per hour. Yes it is safe.
#5  
Kool thank you for all Your assistance, you have been very helpful =)