I want to buy for 3.7v 250mah lipo battery charger. Can anyone tell me from where I can buy it?

https://www.fabtolab.com/1s-3.7v-lipo-usb-charger?search=3.7V

Thank you for sharing the link. My battery has different type of connector. I have attached image for your reference. Can you please guide me to corrected product link.

Aliexpress China or from sp4mm3r China

you can check hobbysea.com for that . please email us i will send you the price .

https://m.ebay.in/itm/USB-Charging-Cable-Wire-25-inch-for-Syma-X5C-RC-Quadcopter-Spare-Parts-/222143026026

This would suit your model. Use it with any phone charger (5V) ac plug or with any USB port.

Quote from: SI74 on August 05, 2016, 06:42:12 PM
https://m.ebay.in/itm/USB-Charging-Cable-Wire-25-inch-for-Syma-X5C-RC-Quadcopter-Spare-Parts-/222143026026

This would suit your model. Use it with any phone charger (5V) ac plug or with any USB port.

It is of 500mah will it destroy my 250mah battery or it will work with 250mah as well.

There is  red led indicator which would tell you when to disconnect(fully charged)