Information of nickel-zinc battery needed

[Zhipeng]

Hi everyone!

I am doing a task in which I need to gather basic information of the Nickel-Zinc battery used for a light electric plane, not a model. I've searched on web but still lack a little information.

Nickel-Zinc battery:​

Energy density: 55~85 Wh/kg, usually 70 Wh/kg
Power density: 900W/kg
It is a little strange because I've seen three different data for power density. (150~200, 500, 900.) How could this happen? And which one is right?
Cycle durability: 500
Temperature and pressure effects: -20~60C

Efficiency:
Charging time:
I think it depends on the size of the battery. And is there anyone can predict a rough range of time?

Cost:
I don't know the initial cost for such a nickel-zinc battery. Does anyone know a rough data?

 

[audioguru]

My electric model airplanes and helicopter use lightweight and high power 4th generation Li-Po batteries. They cost less, their power is higher and have many more charge-discharge cycles than ordinary 3rd generation Li-Po batteries sold today.

Nickel-zinc batteries are used in some portable power tools where their heavy weight is no problem.