Sony Power Charger BCG-34HLD2KN , individual channel ? have minus delta V ?

[leonar]

link official ---> http://www.sony-asia.com/product/bcg-34hld2kn#


It is advertised "Rechargeable battery combination free (1~4 AA&AAA individual charging function)"

Have it individual channel ? have minus delta V ?

Can this 4 slot charger charge only one battery (individual channel)?

Anyone have tried this economical charger?

 

[leonar]

Anyone have tried this $10 charger? , but in sony website said that this charger can individual charging channel

 

[Mr Happy]

It is a simple timed charger. It has individual channels, takes about 7 hours to charge, but has no minus delta-V and no smart charging:

http://www.google.com/search?q=sony+bcg-34hld&sitesearch=candlepowerforums.com

[Edit: Maybe it does have some smarts? Perhaps the manual does not adequately explain how the charger works.]

 

[changsn]

I think this is the charger that I have and my testing implies that it is more than just a simple timed charger. It is definitely individual channels but I'm not sure what it uses for termination, but it terminates more quickly for lower capacity batteries. The manual indicates it does voltage monitoring but I suspect that this is just a poor translation from chinese. If you think about it, if this is a timed charger there is no purpose in monitoring voltage. This charger is a diamond in the rough.
Sam

 

[leonar]

It is a simple timed charger. It has individual channels, takes about 7 hours to charge, but has no minus delta-V and no smart charging:

http://www.google.com/search?q=sony+bcg-34hld&sitesearch=candlepowerforums.com

Mr. Happy, how could you said that takes about 7 hours to charge, but has no minus delta-V and no smart charging ?

In posting by Mr. changsn from here ---> http://www.candlepowerforums.com/vb/showpost.php?p=3547628&postcount=1

Fry's has a sale on the above for $4.99, so I thought I would take a flyer on it. The description indicates that the charger has a voltage monitoring function and safety timer at 7 hrs. Charge rate is 360mah/hr for AA. It will take 1-4 batteries and can be mixed/matched with AA or AAA's. Unfortunately, the 2 AA's that came with the charger - although they are Sony CycleEnergy bats are only 1000mah! But this got me thinking - if the charger was only timed, how could Sony package batteries with only a 1000mah capacity with them. The charger would overcharge these guys and kill'em. So I figured maybe this was really a smart charger and I should test to see when the LED went out when using different capacity batteries.
Test 1 - I took an 1800mah battery which read 0.97v and charged it - ~5 hrs later I noticed the LED was out. The battery was cool to the touch and read 1.41v on my LaCrosse.
Test 2 - I ran down (0.93v) one of the 1000mah CycleEnergy bats which came with the charger and charged it. Sure enough 2 3/4hrs later, the LED was out (1.44v).
This is not conclusive, but sure does suggest that this charger is both individual channel and smart. It may not be the best charger around, but for the price, it looks like a bargain

Shows that Mr. changsn have buy this charger and test it. And the result shows that the indicator LED not always turn off exactly 7 hour after the battery is put in the charger, but the LED turn off vary . This indicate that this charger is not timed base but use a terminating method which is unknown

 

[leonar]

I think this is the charger that I have and my testing implies that it is more than just a simple timed charger. It is definitely individual channels but I'm not sure what it uses for termination, but it terminates more quickly for lower capacity batteries. The manual indicates it does voltage monitoring but I suspect that this is just a poor translation from chinese. If you think about it, if this is a timed charger there is no purpose in monitoring voltage. This charger is a diamond in the rough.
Sam

Have you test also how time does it take from the battery is put in the charger until the LED turn off using the same battery but the full condition in the battery is not the same

For example :
-charge Eneloop 2000mah with 25% full , how long the time until the LED turn off?

-charge Eneloop 2000mah with 50% full , how long the time until the LED turn off?

-charge Eneloop 2000mah with 75% full , how long the time until the LED turn off?

-charge Eneloop 2000mah with 90% full , how long the time until the LED turn off?

Is the time vary ? Is the time for charging Eneloop 2000mah with 90% full shorter than charging Eneloop 2000mah with 25% full ?

 

[changsn]

No, I haven't done that test. I suspect it is easier said than done as it is difficult to know when the battery is at 25% or 50% capacity. I have noticed that it doesn't like some batteries and won't charge them - these are ones that I've had for awhile and admittedly aren't very good quality.
My understanding of the 7 hour cutoff is that this is a safety feature in case the charger does not terminate normally, then at 7 hours the charger shuts down. So the max cycle is 7 hr which roughly correlates to 2500mah.

 

[leonar]

No, I haven't done that test. I suspect it is easier said than done as it is difficult to know when the battery is at 25% or 50% capacity. I have noticed that it doesn't like some batteries and won't charge them - these are ones that I've had for awhile and admittedly aren't very good quality.
My understanding of the 7 hour cutoff is that this is a safety feature in case the charger does not terminate normally, then at 7 hours the charger shuts down. So the max cycle is 7 hr which roughly correlates to 2500mah.

Would you please do the test? In case the LED shut off not always 7 hour, what method does this charger use for terminating?

 

[Notsure Fire]

Why not just get the Maha Powerex or something

 

[leonar]

Why not just get the Maha Powerex or something

Maha Powerex is too much expensive , Maha Powerex MHC-204W charger is expensive but it can't single channel, you have put 2 battery to charge, expensive is not always good