Its difficult to clean the battery connectors, the contacts are hard to get at. Also what product is best for this cleaning?

Its difficult to clean the battery connectors, the contacts are hard to get at. Also what product is best for this cleaning?

It is very important to keep battery conductors clean, specially when ebike is used in a dust or dirt. Particles between battery and battery bracket conductors may cause loose connectivity, sparking resulted in melting plastic parts.

How to clean?
1- Blowing air if you have an air compressor
2- Paint or tooth brush
3- Quick drying contact cleaner sprays