AFAIK
1SN is reverse polarity of 1SM or vice versa.
1SM - Positve pole (red) is on the right hand side of the battery
1SN - Positive pole (red) is on the left hand side of the battery
You can use both batteries, provided that your battery cables are long enough to reach the correct poles. If not, then buy the correct battery for your corolla.


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Bili na nga lang ako new battery for my corolla. Nakaka asar
normally kasi iniintay ko talaga hanggang di na umandar. Naisip ko lang opportunity na sira yung batt ng corolla

