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  1. B3188

    Best types of batteries

    Big consideration is how much shelf life you want it to have after you charge it, and before you run out to use it. Alkalines dont like high current draw and reports say some more modern digital cameras and alkalines dont mix. No battery life at usable voltage with the higher current draw...
  2. B3188

    Charge and draw power at the same time?

    Essentially the load switching "On" while the charger is charging "On" makes a direct connection from power source to your load through the inverter ON and the Charger ON. That is normally quite bad to do.
  3. B3188

    Low Temperature grease lead to seals leaking?

    Good deal look like your on the right track.
  4. B3188

    Low Temperature grease lead to seals leaking?

    Follow up. The NATO code G-395 wide temp range grease is rated at Temp from -54 to 177 Deg C. Lab thinks it is similar to your grease. Lab folk asked if the "crystals" are salt?
  5. B3188

    Low Temperature grease lead to seals leaking?

    Millers Oils is not one of our (Mil) supplier. His lubes don't go through aerospace fuels test lab. Ergo I don't have specific test data back to this batch or mfr.. Grease Lab folk provide the following as it had a similar situation a year or so back. Data supplied is very close to Mil PRF...
  6. B3188

    Low Temperature grease lead to seals leaking?

    Can you provide the specifics as to Manufacturer and product name/number. Also environment used in specifically temperature.
  7. B3188

    Battery test by conductance?

    Well put. We test capacity and charge/discharge efficiency. Most specifications are for ampacity delivered.. We are looking into impedance matching for additional data in building series parallel packs. Having issues with a 42 cell pack (sealed lead acid) arranged 3 cells parallel every...
  8. B3188

    How to make a 5 volt battery?

    Spec sheet in back of manual says its 5V 2.5 amp. Also says 5 watt. Numbers dont add as 5 V at 2.5 Amp is 7.5 watts. So to Battery. Nicad or NiMH are 2000 maH for the very high capacity AA size, 1.2 votl per cell, will last about 3/4 hour Enersys X cell (fat D sealed lead acid) is 5 amp...
  9. B3188

    Battery test by conductance?

    Not fam,iliar with theirs but you might want to take a look at Enersys's white papers and ap notes. Impedance matching of cells is covered. They think matching by impedance quite important.

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