Forum Discussion
jrnymn7
Apr 30, 2015Explorer
Mex,
As far as I know, the thermistor issue is solely an ac input one. It is the inrush of 120Vac into an already hot thermistor, and has nothing to do with the units dc output. Otherwise, every time a significant 12v load was suddenly applied to an older powermax converter, or the charger portion of the converter-charger kicked on, the thermistor would blow. But this is not the case.
Pre-charging, to raise battery voltage would not help, in this case. However, this was my solution to the Turnigy 1080w shutting down, due to a current spike, over and above its current limit, at start up. If you re-call, the battery bank presented such a large load that the current would momentarily spike above the power supply's 60a limit, and it would shut down. So, it has current limiting protection, but not the type suitable for using the supply as a battery charger. I forget the names of the two basic types of current limiting, but this is what separates suitable power supplies from non-suitable power supplies, when it comes to using them as chargers, and not simply as a power supply. The cheapowatt seems to lack any sort of current limiting, whatsoever.
As far as I know, the thermistor issue is solely an ac input one. It is the inrush of 120Vac into an already hot thermistor, and has nothing to do with the units dc output. Otherwise, every time a significant 12v load was suddenly applied to an older powermax converter, or the charger portion of the converter-charger kicked on, the thermistor would blow. But this is not the case.
Pre-charging, to raise battery voltage would not help, in this case. However, this was my solution to the Turnigy 1080w shutting down, due to a current spike, over and above its current limit, at start up. If you re-call, the battery bank presented such a large load that the current would momentarily spike above the power supply's 60a limit, and it would shut down. So, it has current limiting protection, but not the type suitable for using the supply as a battery charger. I forget the names of the two basic types of current limiting, but this is what separates suitable power supplies from non-suitable power supplies, when it comes to using them as chargers, and not simply as a power supply. The cheapowatt seems to lack any sort of current limiting, whatsoever.
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