How long should the first charge be on the EBL-837 universal charger
These are ni ad batteries, so have Whats called a memory effect. A good 24 hours untouched then decharge completely , and do this three or four times. That should extend he life somewhat.
Testimonial: "thank you , this is the first time i purchased one of these and was not happy to find poor instructions . the unit came with 6 batteries 2 9v and 4 AA batteries. the instructions had no mention on charging ... charging time (H)=1.2xbattery capacity(mAh) / charging current (mA) is all mentioned , if i was Sheldon Cooper maybe i could understand this jibberish ... thanks for the simple instructions! well done ."
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