What can cause ACPI to report wrong battery meter informations ?

I have bought a 10400maH battery to replace my 5200maH but
/proc/acpi/battery/BAT0/state & friends still report information
concerning my old battery:

present: yes
design capacity: 5200 mAh
last full capacity: 100 mAh
battery technology: rechargeable
design voltage: 8400 mV
design capacity warning: 20 mAh
design capacity low: 10 mAh
capacity granularity 1: 52 mAh
capacity granularity 2: 52 mAh
model number: 701
serial number:
battery type: LION
OEM info: ASUS

How can I fix that ?

Thank you