I wrote this review in order to do better justice to CoconutBattery v2.7 and improve its rating -3.5 stars- by comparison with Battery Health monitor v -4.5 stars-. In my view the former deserves at least the same rating as the latter !
in fact, well, I avow... I couldn't compare exactly right now the 2 above versions; I could only compare these 2 products on 2 PPC macs (I had no Intel mac available), one iBook G4 with OS 10.4.11 et the other Powerbook G4 with OS 10.5.8; CoconutBattery v2.7 works only on Intel macs; so I could only use respectively:
OS 10.4.11/iBookG4 CoconutBattery v2.6.7 & Battery Health Monitor vv1.5
OS 10.5.8/PowerbookG4alu CoconutBattery v2.6.7 & Battery Health Monitor v1.2 to v1.5
The key issue is that Battery Health Monitor, whaterver the version, cannot read (at all or partly) the battery status data on the PowerbookG4alu as the developer Sonora Graphics acknowledges candidly on its website (recommanding to use older versions such as v1.2, but it didn't work at all in my case)... while CoconutBattery works well in all cases without a glitch !
For the record (yes I know it shouldn't be here ^v^ !), similarily I used the excellent "iStat pro" v4.9.2 widget by http://islayer.com/apps/istatpro/ on both mchines & OS without any problem; iStat pro has, on top of many useful indicators about your machine, has a small section with your battery key figures
(just a very minor issue: below the key battery figures, a bit weird and rather unuseful (?) large white bar which I suppose is some kind of visual indicator (?) I say weird because this bar is topped by the word "Unknown" on the PowerbookG4alu ? and this word becomes "Charged" on the iBookG4 -anyway I can, amongst the figures, read "charge: 100%"-, but this bar may mean something else ?)