Locate the battery, you will need to remove the drivers seat to gain access
Open and slide out the battery cover
Check the Negative (-) terminal clamp is tight
Check the Positive (+) terminal clamp is tight. CAUTION If using a spanner to tighten the terminal, be careful not to short the spanner on the bodywork
Check the battery is generally secure, and if loose, tighten the battery retainer
To tighten, phillips screwdriver is needed. Not too tight because you may damage the battery casing
Replace battery cover and reposition the seat