The following is from the page 2 of the Maha manual:
Originally Posted by e_dogg
Refresh & Analyze Mode
• First recharges the battery, rest for one hour, discharge, rest, thenOn page 4:
recharges again. Charging and discharging rates are programmable.
• Reports the discharge capacity at the end of the cycle.
• Useful when the battery capacity needs to be determined. Also
useful for battery with degraded performance.
• Recommended once every ten cycles for NiMH batteries.
Note the charging capacity is usually higher than the actual capacity of the battery owing to some energy lost as heat.
Charging capacity cannot be used to judge the performance the battery. Instead, it can only be used to determine the progress of the charger. It is normal for this number to exceed the actual capacity by as much as 20-30%.
I gather the batteries that did not finish up were reporting the "charge capacity" to that point. The ones that finished were reporting the "discharge/actual capacity".
Note that although there are references to greater than 0.5C charge rates (i.e. 1000mA), the Maha's algorithim looks to see if the battery exceeds 1.47 volts and this allows charging at much lower rates where no negative delta-V signal might be generated (True of most batteries). If there is such a signal (below 1.47), then the Maha charger will stop charge. The only downside is that a top-up charge is required for an hour as 1.47 is somewhat conservative. So feel free to charge at 200mA with a C9000!