I purchased a Riva through another vendor and had major issues with the wall charger so much so that I threw it out for fear of overcharge and now I simply use the USB charger that came with it and charge it through my laptop. In my opinion the wall chargers aren't regulated correctly, I'd say it's 100 percent a manufacturing issue. For those that don't know the Riva wall plug is one of those ones that plugs into the wall and then you plug the usb charger into the wall plug somehow when you do this the voltage gets screwed up big time. I advise everyone with the wall charger that comes with the kit to stop using them immediately and just use the usb charger on a computer.
TV eGo Battery blew up!
- Thread starter Chief Cuzzo
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I also have found that AC-USB adapters usually are hazardous. If they do not have a CE marking i simply ditch them. Now some will have the CE(meaning China Export) and this can be confusing as they imitate the true CE (European Conformity, in French). These do not comply with a Low Voltage Directive that determines its conformity.
I have one of these chargers here...i googled it the model name that comes in the sticker :HF-B0504 . Results: EUROPA - Consumer Affairs - Unsafe products
Models (all identical) VAA-001, VAA-009 and/or HF-B0504 are unsafe.
CE marking CE mark - Wikipedia, the free encyclopedia
The true CE mark:
The china export mark:
"Some products have a CE symbol that has been alleged to stand for China Export and is confusingly very similar to the E.U.'s CE mark. The two letters are close together, not spaced as in the European conformance mark.[9][10][11]
Some products may be conforming but not displaying the logotype correctly and others may illegally put the correct mark on non-conforming items,[12] or on an item without the required accompanying certificate of conformity."
So far there is only one Chinese Manufacturer that has certificates for all their products regarding wall chargers (does not mean others don't...they just don't give them..so i suspect they don't).
That is Joye: they have their chargers certified.
You could also use a certified AC-USB adapter from a major league company. I use a Nokia AC-USB adapter. It is made in China but has met all safety standards.
I have one of these chargers here...i googled it the model name that comes in the sticker :HF-B0504 . Results: EUROPA - Consumer Affairs - Unsafe products
Models (all identical) VAA-001, VAA-009 and/or HF-B0504 are unsafe.
CE marking CE mark - Wikipedia, the free encyclopedia
The true CE mark:
The china export mark:
"Some products have a CE symbol that has been alleged to stand for China Export and is confusingly very similar to the E.U.'s CE mark. The two letters are close together, not spaced as in the European conformance mark.[9][10][11]
Some products may be conforming but not displaying the logotype correctly and others may illegally put the correct mark on non-conforming items,[12] or on an item without the required accompanying certificate of conformity."
So far there is only one Chinese Manufacturer that has certificates for all their products regarding wall chargers (does not mean others don't...they just don't give them..so i suspect they don't).
That is Joye: they have their chargers certified.
You could also use a certified AC-USB adapter from a major league company. I use a Nokia AC-USB adapter. It is made in China but has met all safety standards.
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The U.S. equivalent would be Underwriter's Laboratory (or sometimes another federally recognized testing lab.)
But, as I am currently charging my protected and my LiMN batteries on chargers that are neither UL or CE, I apparently don't care about that too much.
ETA: And if you want to run a passthru off your AC-USB adapter, make sure the output is 1,000 mA, not 500.
But, as I am currently charging my protected and my LiMN batteries on chargers that are neither UL or CE, I apparently don't care about that too much.
ETA: And if you want to run a passthru off your AC-USB adapter, make sure the output is 1,000 mA, not 500.
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To stray off topic for a moment, I'll thank ALL of you to stay away from MY Geoff. Ramilya, YOU'RE fine, but everyone else?
Well hmphf...
*stalks off to sulk in corner clutching matching bling bottles of AC and TF*
Well hmphf...
*stalks off to sulk in corner clutching matching bling bottles of AC and TF*
2amp AC-USB would be even better if not best, though 1amp should be a minimum requirement the 2 Amp is best.!!!
Amazing, got my new battery and charger in the mail today! Great service Geoff, thanks!
Should I call him too? What should I call him?
Probably, someone should call me as well.
Just don't call me late for dinner!
Not to go too far off topic here, but does everyone unplug their chargers when they are done, or is it just me? I always unplug, as I was told it draws current even when not charging. And for safety, since I'm using an extension cord for power, lacking enough outlets or a convenient power strip. Better safe than sorry, heh?
I always leave my chargers plugged in, but maybe I SHOULD be unplugging them..hmmmm...
Domino! You stop being selfish and share like all the other good girls and boys!
don't make me come over there!
Glad that I saw this thread.. I have one of those AC/USB chargers and left it charging the other day when I left the house. Never again..
I found an AC to USB adapter with 1 amp output that is FCC and CE certified. Cables to Go #22328 Amazon carries it.
1 amp is not enough for a passthrough.
Ohm's law: V(voltage) = I (current) R (Resistance)
rearranged to solve for current:
I= V/R
so
I = 3.7/2.6 (ideal values)
I = 1.42 amps
if you're planning on using 5v, like a normal USB port:
I = 5/2.6
I = 1.92 amps
I've always recommended at least a 2 amp transformer, 3 if possible, just for a little extra room.
Ohm's law: V(voltage) = I (current) R (Resistance)
rearranged to solve for current:
I= V/R
so
I = 3.7/2.6 (ideal values)
I = 1.42 amps
if you're planning on using 5v, like a normal USB port:
I = 5/2.6
I = 1.92 amps
I've always recommended at least a 2 amp transformer, 3 if possible, just for a little extra room.
Always unplug after charging, Li-ion batteries do have to handled with care. Just like the research we all did on PG and VG , you should do the same with batteries. Any battery can go bad, as an old mechanic I've seen car batteries blow up, from improper handling. ANY battery can go bad. Now go clean your cell phone battery connections, or that blutooth that hangs on your ear. Just my opinion but if my battery goes bad on a charger then I would discard that charger also, even if it works afterwards. Congrats to Geoff for handling this professionally. Now I need to order my first ego from him. 
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