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If you have a 08 pre-build from Systema factory most likely it is a Type-A (High Cycle/High Output)... Type B was for the SCK 08 upgrade if you do not want to install those improved planetary gears, but wanted for the battery efficiency purpose only... I have both they seem to work fine so far...
Also, I was using the 480 before I have upgraded to the 490 (High Cycle/High Output)... so far so good....
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