REDU format ruling
Batteryman C

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)If all "Batteryman C"(s) you control are in Attack Position, all Machine-Type monsters you control gain 500 ATK for each "Batteryman C" you control. If all "Batteryman C"(s) you control are in Defense Position, all Machine-Type monsters you control gain 500 DEF for each "Batteryman C" you control.
Rulings
- If you have 2 "Batterymen C" on the field in Attack Position, each of your Machines gains +1000 ATK. If you have 3 "Battermen C" on the field in Attack Position, each of your Machines gains +1500 ATK. (NOT +4500!!!)
- A "Batteryman C" equipped to "Relinquished" is not in Attack or Defense Position so it will not be counted for the effect of "Batteryman C".
- If "Batteryman C" is changed to Machine-Type, it will itself gain the ATK bonus.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.