larainerkaizer Posted September 29, 2006 Report Share Posted September 29, 2006 I think my MZR55 battery is just too old and needs to be replaced. If someone can give some advice I would greatly appreciate it.After "fully charged" it dies after 10 seconds of recording, it plays back for much longer but soon dies as well.Could it be the battery is just too old, or is there a problem with the charger, or mini disc? Is this common for the battery to rear out completley?Thanks,Laraine Quote Link to comment Share on other sites More sharing options...
sector001 Posted September 29, 2006 Report Share Posted September 29, 2006 I think my MZR55 battery is just too old and needs to be replaced. If someone can give some advice I would greatly appreciate it.After "fully charged" it dies after 10 seconds of recording, it plays back for much longer but soon dies as well.Could it be the battery is just too old, or is there a problem with the charger, or mini disc? Is this common for the battery to rear out completley?Thanks,Larainemost likely is the battery if everything else is fine.....what type of battery does the R55 use? Quote Link to comment Share on other sites More sharing options...
MDX-400 Posted September 30, 2006 Report Share Posted September 30, 2006 ^R55 was the first Sony MD portable recorder to use the 9WM/14WM gumstick, IIRC. As a result of the changeover from Li-Ion and Sony still using unit technology that had higher power demands, the R55 was probably one of the worst performers batterywise, of any unit apart from maybe the first generation or two of MD.For it's time it was definitely the worst battery performer; and probably the worst battery life of any unit using an NiMH stick.Sounds like the battery is breaking down under load--i.e. it might have a higher cell resistance than it should (can happen from wear). This would mean it might be okay under low current loads like playback but not under heavier current like recording. You should replace the battery, the NiMH gumsticks don't last all that long anyway, especially in a unit where you'd be cycling the battery a lot due to the abysmal battery life of the R55. Gumstick NiMHs are pretty cheap, so I'd get yourself a new one (or two) If the problem persists even after getting a new battery there is probably a problem with the unit itself. Quote Link to comment Share on other sites More sharing options...
Sparda Posted September 30, 2006 Report Share Posted September 30, 2006 compared to li-ion batteries the 14wm is very cheap. i would just go invest in a new one. Quote Link to comment Share on other sites More sharing options...
larainerkaizer Posted October 1, 2006 Author Report Share Posted October 1, 2006 Thank you all for your advice, I ordered a new one and will try it! Quote Link to comment Share on other sites More sharing options...
sector001 Posted October 1, 2006 Report Share Posted October 1, 2006 Thank you all for your advice, I ordered a new one and will try it! good luck Quote Link to comment Share on other sites More sharing options...
bryce180 Posted January 2, 2007 Report Share Posted January 2, 2007 Laraine, I have also noticed poor battery life on record with a new Nimh battery but I blame the battery compartment design. There's a bad connection via the end contact, which relies on a hinge for continuity. You could verify this by connecting the battery directly to the DC input socket. The MZR55 draws more current in record so the battery sensor reacts to the lower voltage, etc. Quote Link to comment Share on other sites More sharing options...
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