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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > F30 DIYs and Coding Discussions > Pls Help F30 Change Battery
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      05-21-2019, 06:19 AM   #1
chin1202
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Pls Help F30 Change Battery

F30 original battery is 90ah ,now change to 95ah
already register new battery.
5ah differ,need coding battery capacity?
thanks
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      05-21-2019, 11:23 AM   #2
yungming
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yes, you need to register in the DME

Varta DIN95?
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      05-21-2019, 11:48 AM   #3
atzebmw
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I think 5AH difference doesn't matter.
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      05-21-2019, 05:50 PM   #4
Mr Podman
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The registration intervals are 10Ah. 90Ah and 95Ah are in the same interval.

Just register it if they are both AGM's.




podman
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      05-21-2019, 11:43 PM   #5
yungming
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BMW charging system increases the current as the battery ages to compensate for the aging cells, thus if you replace battery without register, it will charge the battery at higher current as old battery thus will kill the battery faster or reduce the life of the battery

you also need to replace the battery with the same type Ah if your car came with an AGM battery, the charging profile is different than with a standard flooded battery.
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      05-22-2019, 02:20 AM   #6
chin1202
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Quote:
Originally Posted by yungming View Post
yes, you need to register in the DME

Varta DIN95?
koba brand battery SA59520
12v 95ah(20HR)
180MIN(RC) 850A(EN)
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      05-22-2019, 02:25 AM   #7
chin1202
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Quote:
Originally Posted by chin1202 View Post
change to koba brand battery SA59520
12v 95ah(20HR)
180MIN(RC) 850A(EN)
original battery brand is Banner
12v 90AH 900A(EN)
160RC 900CCA (SAE)
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