I am looking at the Nitecore D4 Digicharger/Four Channel Universal Smart Battery Charger/LCD Display and GYRFALCON All-44 4 Channel Digital...

I am looking at the Nitecore D4 Digicharger/Four Channel Universal Smart Battery Charger/LCD Display and GYRFALCON All-44 4 Channel Digital Battery Charger. What do you recommend ? I read where 26650 have a higher capacity than 18650s. Andy

Hi All, I asked about the voltage of a USB fast charger. I got back: 5V-3A, 9V-3A, 12V-3A, 15V-3A, 20V-3A My Android tablet wants 5.2V,...

Hi All, I asked about the voltage of a USB fast charger. I got back: 5V-3A, 9V-3A, 12V-3A, 15V-3A, 20V-3A My Android tablet wants 5.2V, 2.0 A Uhhhh. Is there something about the USB cable that tell the charger not to fry what I plug it into? https://www.amazon.com/dp/B08786SHXV Many thanks, -T

First of all, this is a request for a *recommendation*, not a request for someone to do Google searches for me. - - - I need a charger for AA,...

First of all, this is a request for a *recommendation*, not a request for someone to do Google searches for me. - - - I need a charger for AA, AAA, and 9v batteries. Four of the AA or AAA at a time is OK. I see very few that support all these batteries (Maha makes a separate charger for 9v). Of those that do, not all use delta-V termination (or don't specify). Of those remaining th...

I picked up a AAA NiMh battery charger. The label reads: Output: 1.2 V 800 mA AA/AAA charging: 120 mA Why the two different current...

I picked up a AAA NiMh battery charger. The label reads: Output: 1.2 V 800 mA AA/AAA charging: 120 mA Why the two different current specs? Does not compute - -- Rich

I would like to buy a NP 4-6 Yuasa 6 Volt 4 Amp Hour Battery. Would this charger work and how do I determine how long to recharge a discharged...

I would like to buy a NP 4-6 Yuasa 6 Volt 4 Amp Hour Battery. Would this charger work and how do I determine how long to recharge a discharged battery ? Model: HB-0702-01 Input: AC100-240V 50-60Hz 0.2A Output: DC7.2V 1.0A I would be powering some led lights that operate at 3.0 volts, so I would need to find out how to step down the voltage as well. Thanks.

I drive my pick-em-up truck every few months. So the battery is dead when I go to use it... like today :-( I'm looking for recommendations...

I drive my pick-em-up truck every few months. So the battery is dead when I go to use it... like today :-( I'm looking for recommendations for the _best_ (*) float charger I can buy to just plug the truck into when it's parked. (*) Cost no object. ...Jim Thompson -- | James E.Thompson | mens | | Analo...

I am using the portable charger on friend's house, but it's tripping the GFCI circuit. How is that possible if the vehicle is isolated from the...

I am using the portable charger on friend's house, but it's tripping the GFCI circuit. How is that possible if the vehicle is isolated from the ground with four rubber tires? The 15A power extension is fine. I have used this charger on another house before. Is the GFCI outlet too sensitive? Anyway to deal with this? Temporary bypassing the GFCI outlet?

I have a "dumb" NiMh/NiCd charger. For 9 volt batteries, it specifies 25 milliamps. The charger manual gives this charge...

I have a "dumb" NiMh/NiCd charger. For 9 volt batteries, it specifies 25 milliamps. The charger manual gives this charge formula. Charging time(h) = 1.2 x battery capacity (mAh) -------------------- charging current (mA) 13.44 hrs. Is is formula useful or is there something better that factors in the starting Voltage ? Thanks.

On some of the inexpensive Dell laptops they implement a hardware-lockout system intended to prevent you from using aftermarket charger bricks...

On some of the inexpensive Dell laptops they implement a hardware-lockout system intended to prevent you from using aftermarket charger bricks to charge the battery. The way they do this is there's a chip in the Dell charger that contains a unique identifier which a chip on the laptop mobo requests from it on startup over a one-wire interface. If on boot the BIOS can't confirm that the ...

CSU (Cal State U) is now anti-EV. During the pandemic, I got kicked out of their chargers. Now, all chargers go dark. I have to go 8 miles...

CSU (Cal State U) is now anti-EV. During the pandemic, I got kicked out of their chargers. Now, all chargers go dark. I have to go 8 miles north to the charger in Cere. The charger looks and feels like ChargePoint, but i got an email that my EvGo account will be charged. The only link between EVGO and CHPT is my email address. Did EVGO hijacked CHPT?

I have gone through several car usb chargers that plugs into cigarette lighter plug. They usually die in a few months. I just opened one up...

I have gone through several car usb chargers that plugs into cigarette lighter plug. They usually die in a few months. I just opened one up and it has a 34063a IC in it. The circuit is probably similar to this: http://www.ifixit.com/Teardown/Generic+1A+USB+Car+Charger+Teardown/10108 When I plug this in it draws 3mA but the built-in LED doesn't light up. I assume the IC has fried. ...

Hi all, I have a device which is powered by a solitary 1.2V 800 mA NiCd cell. An AC wall charger (5VAC @ 180 mA) is used to charge the cell. ...

Hi all, I have a device which is powered by a solitary 1.2V 800 mA NiCd cell. An AC wall charger (5VAC @ 180 mA) is used to charge the cell. This is done via a simple half-wave rectifier that is built in to a small circuit board inside the device. The battery sees about 90 mA (true RMS). It seems strange to use a hard-to-find AC power source rather than a commonly available DC wall ada...

This is the relevant part of the schematic of an 18650 battery charger and boost converter (to 5V)...

This is the relevant part of the schematic of an 18650 battery charger and boost converter (to 5V) module: https://i.postimg.cc/Tw7X35Fq/USB-to-TP4056.jpg And here's the module: https://www.aliexpress.com/item/32870411748.html Coming from the USB power pin, there's a series Schottky diode and a very low value resistor. The resistor is found in the TP4056 datasheet typical applic...

I have a battery charger that is rated at 2, 15, or 100 amps. It's a Everstart WM-1510 ma model. (Walmart). I found that Schumacher has...

I have a battery charger that is rated at 2, 15, or 100 amps. It's a Everstart WM-1510 ma model. (Walmart). I found that Schumacher has an identical charger model SE-1510 ma. That says these Everstart chargers are made by Schumacher. Anyhow, the 12v circuit breaker has died and will not reset. That seems to be the most common problem on all chargers. My question is this. The Schu...

What do you folks think about this gem: https://www.youtube.com/watch?v=cpaWCedoptA I like the special high reluctance transformer and...

What do you folks think about this gem: https://www.youtube.com/watch?v=cpaWCedoptA I like the special high reluctance transformer and kindling used as insulation.

A few months ago, I talked about it to solve insufficient EV charging spots and ICEing problems. Rick said it was unnecessary. Well, they didn't...

A few months ago, I talked about it to solve insufficient EV charging spots and ICEing problems. Rick said it was unnecessary. Well, they didn't listen. https://video.foxbusiness.com/v/6309894742112#sp=show-clips

It sounds like anyone with common sense would be ok. Who would stand by a charger for any length of time?

It sounds like anyone with common sense would be ok. Who would stand by a charger for any length of time?

I would like to find out how long to charge the above battery. Charger puts out 500 mAh. Thanks.

I would like to find out how long to charge the above battery. Charger puts out 500 mAh. Thanks.

Here is an image of the On-Board Charger: http://zoopow.com/leaf/PXL_20210210_233550127.jpg Is it sufficient to just tap the Proximity,...

Here is an image of the On-Board Charger: http://zoopow.com/leaf/PXL_20210210_233550127.jpg Is it sufficient to just tap the Proximity, Pilot and Output pins into a CCS socket? I know that it might be limited to 7 kw CCS.

I have a 12 Volt battery, 9.5 Ah that uses a 12 volt charger 1.0 amp. Assuming the battery is completely discharged, is there a way to...

I have a 12 Volt battery, 9.5 Ah that uses a 12 volt charger 1.0 amp. Assuming the battery is completely discharged, is there a way to determine how long to charge ? Thanks, Andy