Techno c8 doesn't charge.

Techno c8 only charges with a particular charger. Have tried different chargers at stores but it won't charge. It just stays at the same percentage. So I'm worried is it a motherboard problem ? And if so how do I go about it. Could it be broken contacts? A guide on troubleshooting and repairing such related problems would be welcome. Also , there's a caveat. Why is it that the phone charges well with just that one particular charger but rejects all other chargers twice as powerful ? Could it be the USB cable of the charger? So what are my options? Sorry it's long but I really need help on this. Thanks in advance