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Metal Detectors
Whites
Whites compatible battery tray, 3 x 18650
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<blockquote data-quote="karelian65" data-source="post: 510059" data-attributes="member: 9224"><p>The 4 x 18650 pack has Panasonic NCR19650B flat cells, a quick test to see how long the pack lasts in the Tdi SL. The machine had a modest threshold and no headphones, so using the speaker for max battery drain..</p><p></p><p> 9.00 am 16.4 volts, starting voltage.</p><p>10.00am 15.5 volts one hour.</p><p>11.00am 14.9 volts two hours.</p><p>11.30am 14.6 volts tow and a half hours.</p><p>12.00 14.4 volts three hours.</p><p>12.30pm 14.15 volts three and a half hours.</p><p>1.00 pm 13.9 volts 4 hours.</p><p></p><p>Fast drop in the first hour which slows as the cells are depleted. I'll pull the plug at 3 hours to optimise performance. Since the design allows us to swap out for fresh cells in the field I'll do it for max depth. So three hours and I'm still well over 14 volts.</p><p></p><p>Karelian</p></blockquote><p></p>
[QUOTE="karelian65, post: 510059, member: 9224"] The 4 x 18650 pack has Panasonic NCR19650B flat cells, a quick test to see how long the pack lasts in the Tdi SL. The machine had a modest threshold and no headphones, so using the speaker for max battery drain.. 9.00 am 16.4 volts, starting voltage. 10.00am 15.5 volts one hour. 11.00am 14.9 volts two hours. 11.30am 14.6 volts tow and a half hours. 12.00 14.4 volts three hours. 12.30pm 14.15 volts three and a half hours. 1.00 pm 13.9 volts 4 hours. Fast drop in the first hour which slows as the cells are depleted. I'll pull the plug at 3 hours to optimise performance. Since the design allows us to swap out for fresh cells in the field I'll do it for max depth. So three hours and I'm still well over 14 volts. Karelian [/QUOTE]
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Metal Detectors
Whites
Whites compatible battery tray, 3 x 18650
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