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cbretteville

Delkin charger - M8 (All posts merged)

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John

 

Li-Ion batteries are fine if operated within a clearly defined envelope and they have protection circuitry to protect against over-voltage, over-current (in and out) and over-temperature to keep within that envelope.

 

I expect the battery has a non-resetable thermal trip to protect against extreme heat and that the externally accessible sensor is for "information only". Good engineering practice would say "stop poking current into the thing if it's getting hot and bothered" and with only a two wire connection, the charger can only monitor the current flowing into the thing based on the voltage being output with no direct knowledge of what the battery pack is doing thermally.

 

Li-Ion chargers monitor the progression of the charging cycle - the current should decrease over time with a constant voltage applied as the battery charge level increases and it's deemed fully charged when the current drops to (say) 10% of the initial value. That's all well and good providing it gets there but there's a safety timeout (several hours, typically) to terminate the charge cycle if that end-state is never reached.

 

It's really unfortunate that Li-Ion battery technology has grown piecemeal in the way it has with so many form factors. It would have been better if the batteries had been standardised across a range of, say, 10 or 20 pin-outs with a ROM chip on board from the start saying "this is how I should be charged". As it is, most of us will have a drawer full of battery chargers from different vendors.

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Got mine today , which I could say it was compact . Definitely won't travel with it but at least I have a backup.

 

cheers

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Got mine (finally) today. For some reason when it arrived in Vancovuer FEDEX decided to send it on a bit of trip to Aukland NZ before delivering it to me. Took a total of 8 working days but it could have been 5. I paid GST/PST a total of $18.08 no duty or brokerage fees. Delkin - picked-up the tab on shipping because of the side trip - their decision - as I suspect FEDEX refunded the cost of shipping back to them as well. A NICE COMPANY TO DEAL WITH, EXCELLENT CUSTOMER SERVICE.

 

I am generally pleased. I can charge two M8 batteries and for that matter two different OEM batteries at the same time. It seems to me - to be somewhat faster charging the M8 batteries and I like the fact it tells me how much of a charge is remaining, etc.

 

Best to all. Terry.

 

Looking to open an old thread here. You said you are charging OEM batteries and that caught my interest. I have one from ebatteries off Amazon. The Leica charger only charges it so it show 1/4 charge in the M8.2 Does the OEM charger do a better job with OEM batteries?

 

What source do you use for OEM batteries?

 

Lee

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HI, in regard to charging after market batteries: my Leica charger would charge none of them, but the Delkin fully charges about half of those I have tried.

 

Another plus of the Delkin is that with the AA/AAA plate you can charge four (AA or AAA) batteries simultaneously. Each of the four batteries has separate indicators of charge completion. So, you can charge either two camera batteries or one camera battery and four flash batteries at the same time-useful. ron

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