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Nikon Compact Digital Cameras
General Compact Digital Cameras
Coolpix L Series
Rechargeable Energizer Batteries - Nikon L840??
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<blockquote data-quote="WayneF" data-source="post: 499939" data-attributes="member: 12496"><p>Maha is a good brand, well valued. That one is $15, 3-4 hours (for a dead battery) is sort of a minimum, fairly slow, but it should do a good job. </p><p> It does say:</p><p>Rechargeable Batteries with full -deltaV Computer Control</p><p></p><p>Delta-V is Delta Voltage, which is good - it watches for a specific little voltage peak that indicates full charge, and more would not be helpful. Then it shuts off (to a trickle charge).</p><p></p><p>It is a good value for $15, and should run circles around the first one. But a downside is that it only has two status LEDS, meaning it cannot charge just one battery, they have to be in pairs, and the pair is monitored instead of each individual battery. If one is near fully charged and one is very low charge, the pair gets the treatment of the low charged one. This two battery system is common in lesser chargers.</p><p></p><p>What I was speaking of sort of starts here:</p><p></p><p><a href="http://www.amazon.com/MH-C401FS-DCW-INTERNATIONAL-Version-Charger-Adapter/dp/B0095WR65G/ref=as_sl_pc_tf_til?tag=16812-20&linkCode=w00&linkId=GE22TWGUTRUAEM5J&creativeASIN=B0095WR65G" target="_blank">Amazon.com: Maha MH-C401FS-DCW INTERNATIONAL Version Smart Charger with Car Adapter: Computers & Accessories</a></p><p></p><p>It has four LEDs, and effectively four chargers which monitors and controls each cell individually, and does just what that one needs. It has a switch to select fast or slow charge, 100 minutes or 4 or 5 hours, assuming near dead batteries that need charge. That one cell will stop fast if the battery doesn't need much.</p><p></p><p>Two hours (for a dead battery) is a very reasonable rate for NiMH, called 0.5C. C is the capacity of the battery, and if charged at 1C milliamp rate (2.3 amps for a 2300 mah capacity), it will charge in one hour. Or 0.5C charges in 2 hours. And less time if already partially charged. </p><p>0.5C and 2 hours is a very normal rate for NiMH, if the charger is smart and knows when to quit.</p></blockquote><p></p>
[QUOTE="WayneF, post: 499939, member: 12496"] Maha is a good brand, well valued. That one is $15, 3-4 hours (for a dead battery) is sort of a minimum, fairly slow, but it should do a good job. It does say: Rechargeable Batteries with full -deltaV Computer Control Delta-V is Delta Voltage, which is good - it watches for a specific little voltage peak that indicates full charge, and more would not be helpful. Then it shuts off (to a trickle charge). It is a good value for $15, and should run circles around the first one. But a downside is that it only has two status LEDS, meaning it cannot charge just one battery, they have to be in pairs, and the pair is monitored instead of each individual battery. If one is near fully charged and one is very low charge, the pair gets the treatment of the low charged one. This two battery system is common in lesser chargers. What I was speaking of sort of starts here: [URL="http://www.amazon.com/MH-C401FS-DCW-INTERNATIONAL-Version-Charger-Adapter/dp/B0095WR65G/ref=as_sl_pc_tf_til?tag=16812-20&linkCode=w00&linkId=GE22TWGUTRUAEM5J&creativeASIN=B0095WR65G"]Amazon.com: Maha MH-C401FS-DCW INTERNATIONAL Version Smart Charger with Car Adapter: Computers & Accessories[/URL] It has four LEDs, and effectively four chargers which monitors and controls each cell individually, and does just what that one needs. It has a switch to select fast or slow charge, 100 minutes or 4 or 5 hours, assuming near dead batteries that need charge. That one cell will stop fast if the battery doesn't need much. Two hours (for a dead battery) is a very reasonable rate for NiMH, called 0.5C. C is the capacity of the battery, and if charged at 1C milliamp rate (2.3 amps for a 2300 mah capacity), it will charge in one hour. Or 0.5C charges in 2 hours. And less time if already partially charged. 0.5C and 2 hours is a very normal rate for NiMH, if the charger is smart and knows when to quit. [/QUOTE]
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Nikon Compact Digital Cameras
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Rechargeable Energizer Batteries - Nikon L840??
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