hi guys. having real issues with my battery so decided to replace. what would be correct spec battery for 2.7 911s MY1975
found choice of 3 on Yuasa site:
Yuasa - YBX1100
Capacity (20hr)
70 Ah
Starting Power – CCA (EN)
620 Amps
Yuasa - YBX3100
Capacity (20hr)
71 Ah
Starting Power – CCA (EN)
650 Amps
Yuasa - YBX5100
Capacity (20hr)
75 Ah
Starting Power – CCA (EN)
680 Amps
which one do i need to go for???
also currently in my car i have interstate megatron plus battery 850CCA , does it mean it is wrong battery there currently?
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any help much appreciated
found choice of 3 on Yuasa site:
Yuasa - YBX1100
Capacity (20hr)
70 Ah
Starting Power – CCA (EN)
620 Amps
Yuasa - YBX3100
Capacity (20hr)
71 Ah
Starting Power – CCA (EN)
650 Amps
Yuasa - YBX5100
Capacity (20hr)
75 Ah
Starting Power – CCA (EN)
680 Amps
which one do i need to go for???
also currently in my car i have interstate megatron plus battery 850CCA , does it mean it is wrong battery there currently?
\
any help much appreciated