How can I recover a bum battery?

[Mikus Grinbergs]

> ok bat-dump-banks

 1st battery, 1st boot :

 Regs

            8  9  a  b  c  d  e  f   0  1  2  3  4  5  6  7
 ffb22ea8  ff 6a ff ff ff ff ff 38  ba ff ff ff 52 78 e4 e9
 ffb22eb8  20 7b ff ff ff ff ff ff  1f 5c e6 e1 ff ff ff ff

 Bank 0

 ffb22ea8  00 00 00 00 00 30 70 78  00 18 01 90 6d 05 03 75
 ffb22eb8  fe ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff

 Bank 1

 ffb22ea8  ff ff ff ff ff 00 00 00  00 00 00 00 00 00 00 00
 ffb22eb8  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 22

 Bank 2

 ffb22ea8  08 09 17 00 00 04 a6 00  1b 76 00 06 30 00 01 17
 ffb22eb8  12 d6 00 00 00 00 00 67  00 00 00 00 00 00 00 00


 1st battery, 2nd boot :

 Regs

            8  9  a  b  c  d  e  f   0  1  2  3  4  5  6  7
 ffb62860  ff 6a ff ff ff ff ff 38  ba ff ff ff 51 ee e5 c6
 ffb62870  1e 97 ff ff ff ff ff ff  22 df e8 f6 ff ff ff ff

 Bank 0

 ffb62860  00 00 00 00 00 30 70 78  00 18 01 90 6d 05 03 75
 ffb62870  fe ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff

 Bank 1

 ffb62860  ff ff ff ff ff 00 00 00  00 00 00 00 00 00 00 00
 ffb62870  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 22

 Bank 2

 ffb62860  08 09 17 00 00 04 a6 00  1b 76 00 06 30 00 01 17
 ffb62870  12 d6 00 00 00 00 00 67  00 00 00 00 00 00 00 00


 2nd battery, 1st boot :

 Regs

            8  9  a  b  c  d  e  f   0  1  2  3  4  5  6  7
 ffb22e98  ff 6a ff ff ff ff ff 38  ba ff ff ff 52 92 e4 aa
 ffb22ea8  1b 98 ff ff ff ff ff ff  20 96 e7 a4 ff ff ff ff

 Bank 0

 ffb22e98  ff ff ff ff ff de ff ff  ff ff df 41 a2 00 a4 00
 ffb22ea8  d4 00 00 02 00 00 00 26  10 01 00 00 00 00 00 00

 Bank 1

 ffb22e98  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 ffb22ea8  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 22

 Bank 2

 ffb22e98  07 0b 16 01 00 00 2f 00  17 b4 00 01 53 00 00 2a
 ffb22ea8  00 f7 00 00 00 00 00 00  00 00 00 00 00 00 00 00



 2nd battery, 2nd boot :

 Regs

            8  9  a  b  c  d  e  f   0  1  2  3  4  5  6  7
 ffb628f0  ff 6a ff ff ff ff ff 38  ba ff ff ff 52 8e e5 d2
 ffb62900  18 fb ff ff ff ff ff ff  21 09 e8 81 ff ff ff ff

 Bank 0

 ffb628f0  ff ff ff ff ff de ff ff  ff ff df 41 a2 00 a4 00
 ffb62900  d4 00 00 02 00 00 00 26  10 01 00 00 00 00 00 00

 Bank 1

 ffb628f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 ffb62900  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 22

 Bank 2

 ffb628f0  07 0b 16 01 00 00 2f 00  17 b4 00 01 53 00 00 2a
 ffb62900  00 f7 00 00 00 00 00 00  00 00 00 00 00 00 00 00



 3rd battery (known good) :

 Regs

            8  9  a  b  c  d  e  f   0  1  2  3  4  5  6  7
 ffb62880  ff 6a ff ff ff ff ff 38  ba ff ff ff 52 82 e6 16
 ffb62890  10 0c ff ff ff ff ff ff  20 36 e8 fa ff ff ff ff

 Bank 0

 ffb62880  00 00 00 00 00 20 0c 1c  1e 00 46 00 64 61 10 05
 ffb62890  00 6a 00 00 01 00 00 00  13 88 00 00 00 00 00 00

 Bank 1

 ffb62880  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 ffb62890  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 22

 Bank 2

 ffb62880  09 02 14 00 00 04 00 00  1c 0a 00 00 31 00 00 00
 ffb62890  00 06 00 00 00 00 00 00  00 00 00 00 00 00 00 00


mikus  (all tests without AC power)