Hi Guys, when Cordless Renovation choose to exit the business we needed to find a new supplier. Lucky for all of as we found MTO Battery of York, PA. Jason the owner introduced us to the next generation cells and Protective circuit module. His business does lot with the Navy as a supplier of battery packs to submarines. With a higher standard of assembly and performance we can offer the best quality packs.
Today we use Panasonic and LG Chemical select lithium cells that are higher rated. You start at 3.4Ah then add more cells to reach 6.8Ah or 10.2AH. The packs come in 11.1v, 14.8v and 18.5V. We have made over 20 different styles.
To predict runtime you need to know what the current draw of the loco/train is. Then divide into the rating of the battery pack. Trains draws 2 amps, battery is 3.4 amps runtime is 1.7 hours. As Steve stated runtime can be longer if you are just cruising along which is a slow discharge rate.
Safety is first then runtime. The PCM we use provides four functions.
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Short protection. You can touch the red and black wires and the pack will turn off until you clear the short. (Military spec)
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Preserve the pack for up to 12 months between charges.
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Over discharge protection. PCM will shut off pack if you exceed its rating pulling a train. PCM will shut off pack when voltage in pack is too low.
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Over charge protection. PCM monitors charging to smart charger.
Don