I've recently taken on an assignment at school on calibrating BDI and IR compensation. I'm looking for advise on a Method of testing the batteries and attaining scientific results as to adjust IR compensation to extend the life of the batteries. It's important to note that we have 300 pieces of equipment and the batteries are changed at two areas in the warehouse. these batteries are NOT designated to any particular truck? Before I set out taking gravity readings I would like a method of conclusion. This will greatly benefit the company I work for in the long run.
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I would always recommend keeping batteries matched with trucks where possible as this allows easier identification of battery and truck faults and the correct setting of the truck BDI to the batteries actually used on the trucks. The operators and how they drive the machines can have a huge effect on battery life.
My plan is to check SG's of batteries coming in already in lift lockout. I'll cross this with the truck it came from. We have over 300 batteries and both AC and DC drives so this can be a difficult task as we do not dedicate 2 batts per truck. I hope to extent battery life and reduce change times. I feel this experiment will prove to be of great benefit to the company. If you have any further information it would be great as I hope to attain the best results possible.
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In my opinion all the readings you get from any BDI are just guides. The only accurate way to ascertain any batteries state of charge/discharge is with the SG. With any BDI the accuracy will change during the batteries life and will be greatly affected by the way the battery is being used. Too much faith is put into BDI readings and not enough time spent taking the actual SG's of the batteries involved. The BDI is just an indication of voltage and this can vary greatly from the true state of charge/discharge.
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