Hi IrishClanger, That is the same battery as I am using.
Please find the datasheet for the battery in question here:
The datasheet shows that the standard charge current is 0,2CA which in this case is 500ma, the max charge current is 1CA which will be 2500ma. Since Mbot puts out 1000ma @3,7v this equates to 0,4CA which is well below the max of 1CA.
an excellent tutorial on these batteries can be found here:
The datasheet of the Li-Ion charger chip TP4056 can be found here:
A PDF schematic for the mCore can be found here and at the top left hand side is the charging circuit
The charging chip on the actual board is directly behind the DC barrel jack socket for the battery pack and the regulating resistor for charging current is to the right of it, 2nd one up and marked 122.