Questions tagged [charger]

A device which controls the voltage and current being delivered to a capacitor or battery.

Filter by
Sorted by
Tagged with
0
votes
0answers
11 views

Can I use this Panasonic battery charger in extension?

In our home, the the sockets are marked 5A. I'm using a Philips extension from the same so it reaches near my desk for my laptop charging. The extension has written: 6A 250V~ 1500W (Max). So I guess ...
0
votes
4answers
1k views

How to block reverse current from battery to charger (DC-buck CC/CV module)?

The set-up For a project, I have a set-up where the power to the main load comes from either a AC-DC adapter input (24V) or a battery pack (12V to 16.8V - 4S4P 18650 Li-ion cells). The battery pack ...
0
votes
2answers
131 views

Ouput resistance of a charger

I want to measure output of a charger (MODEL: GB28-25126) with below picture: When I connect my HIOKI multi-meter (3280-10F) to output of my charger in order to measure the resistance, it shows OF (...
0
votes
2answers
538 views

Can I use a TP4056 to solar charge a lithium ion battery

This is kind of a continuation of an already existing question. I'm wondering if its possible to use a TP4056 based charger like this one to charge a 3.7 volt lithium ion battery with a 4.5 volt 45 ...
0
votes
1answer
1k views

24v output from two 12v batteries in series, charge them with 12 volts in parallel

I have a solar charge controller which can charge 12volts batteries. I have two 12 volt batteries which are connected in parallel. I need to have 24volts output without using dc-dc step up converters. ...
0
votes
0answers
27 views

Controlling Li-Ion charging through USB

I am trying to design a circuit with power supply for a microcontroller with a li-ion cell depending on whether a charger is connected or not. I tried it first in the Falstad simulator. "USB 5V&...
0
votes
0answers
10 views

TPS61090 used for 5V from LiPo, not turning on with USB input

I inherited a circuit design with MCP78371 (U1) and TPS61090 (U2). When USB is applied, U1 outputs V-USB to U2 for boost to 5V (to power a very small motor (180mA) and LED backlight (90mA) on a LCD ...
1
vote
2answers
490 views

Schmitt trigger design to control lead acid battery charger

I've found a very good explanation on schmitt trigger circuit design here -What is a Schmitt Trigger and its application exactly? But the design is done considering same reference voltage and the ...
0
votes
1answer
31 views

Lightest possible USB solar charger with 5V 2A to 3A output?

I'm doing a lot of wilderness expeditions an needs the lightest gear possible. I want to make a solar charger (for my nitecore nb10000) that is as light as possible and has a USB output 5V and between ...
0
votes
0answers
15 views

Can I connect a smart charger to a lithium battery with a BMS

I have several tools with NiCad batteries which are failing due to the age of the batteries. I refuse to throw these perfectly good tools away and wish to convert the batteries to lithium. I HAVE ...
1
vote
1answer
24 views

Reverse voltage protection for lithium battery charging module with smd component(s)

I want to add to this famous single cell lithium ion battery charging module a reverse voltage protection: I ended up with the following circuit (Load draws up to 700mA): Sorry, updated: My ...
0
votes
1answer
41 views

about the high voltage capacitor found in charger circuit

A while ago i have opened an electronic balance charger for a reason to try understanding how the circuit works so I've drawn the entire circuit for that purpose but i no longer have the drawing, but ...
0
votes
0answers
33 views

Parallel charging of li-ion series pack

I have made a 3s lithium polymer battery pack that I am trying to make a charging unit for My current charger setup is 3x AC/DC converters powering x3 TP5100 charger boards, each charger leading to ...
0
votes
1answer
373 views

PMIC Battery charger and power path

I was looking for a PMIC with battery charger and built-in power path when I came across one of TI's new chip. BQ25601 http://www.ti.com/product/BQ25601. while I was trying its performance and doing ...
0
votes
1answer
51 views

Circuit for 3 stage lead acid battery charger controlled by microcontroller advice

I designed the circuit below as a mashup of different ideas. It is a lead acid battery charger controlled by a microcontroller. The relay allows the micro to select between the constant current ...
0
votes
0answers
24 views

Convert Ni-Mh charger's connector from cigarette lighter to USB

I recently purchased a very basic airpump to inflate a mattress. As we will be taking this mattress to a camping trip on a motorbike, we wont have a car cig-ligther socket (12V), only USB 5V. This is ...
0
votes
1answer
68 views

Pls help by answering.Thank you.Need to understand before proceeding further [duplicate]

I have some doubts and confusion. Please clarify by explaining the science behind it. Thank you. I have no knowledge in electicity. Regardless what i put as voltage and current is just example, just ...
2
votes
2answers
129 views

Charging a Phone With a Lower Current-Rated Power Supply

My friend's iphone charger exploded. She was charging an iPad with it. Since the iPhone power supply has a current rating of 1A while the iPad charges with a 2A current, many are blaming her that she ...
0
votes
0answers
41 views

Can I connect a mobile charger of output 5v 2amps to power a 3-6v dc mini motor pump of current intake 130-220mA? [duplicate]

I wanted to power a 3-6v dc mini motor pump using mobile charger do I need to use a limiter to control the current since motor requires only 130-220mA and charger output is 2A
1
vote
1answer
191 views

Sense Resistor in Battery Charging Circuit

I have a 3 18650 in parallel Li-ion battery pack and wish to use the LTC4162 as the charger and LTC2944 and the level indicator. I am unsure as to who to wire them to effectively use both. I noticed ...
-2
votes
4answers
4k views

Charging 2 12V batteries with a 19V 3.42A laptop charger

I was wondering since the voltage of my laptop charge is too high to charge one battery, it occurred to me if it could be possible to make a parallel or series arrangement to get my 2 12V batteries ...
-1
votes
1answer
53 views

Charging or replacing old battery pack without burning house down

A wealthy neighbor passed down the most awesome toy ever for us to give our son under the Christmas tree, but it's got no charger. And I have no idea if the battery pack inside works. That pack is ...
0
votes
1answer
820 views

how can I hack a usb charger to work with ALL phones and specifications [closed]

perhaps I am asking for too much. Please do tell. So I have a few usb chargers laying around. I realised that in these chargers I can charge iPhones and I can ...
0
votes
1answer
341 views

Charger Delta Electronics ESR-48/40A E Voltage and Current Adjustments

Does anybody know how to change (i.e. program) the output voltage and limit the output current in the Delta Electronics ESR-48/40AE charger? The following web pages: this one and the next one have ...
0
votes
1answer
53 views

Dashed and Solid Line Signs on a Battery

What is the meaning of the solid and dashed line on a battery or charger? I will give two examples below and the first one is a 4-cell battery and it says "7.6V [dotted/dashed line] 54.4 Whr 7150 ...
0
votes
0answers
23 views

Li4S Battery Full Error - iMax B6

I burnt 3 chargers (Imax B6) simultaneously by connecting Lipo 4s battery in reverse . All showing connection break error. I changed the burnt MOSFET (U5) in all chargers, one charger is recovered and ...
0
votes
1answer
684 views

How can I limit the current drawn by a Li-Ion battery pack BMS?

I have a Li-Ion battery pack made with twelve 18650 in a 3S4P configuration, using an off the self Battery Management System (rated for 25A), that I purchased on aliexpress. I tried to charge it using ...
0
votes
2answers
147 views

Unstable Lower And Upper Voltage Charger Wall Adapter For Charging Battery

i have 2 charger adapter and both of them i testing with usb meter tester Charger A : Showing 4.92V-4.96V (the number keep moving ups and down between 4.92V-4.96V when high load) Charger B : ...
1
vote
2answers
681 views

How to use CC/CV Charger with a DC/DC converter

I am searching for a solution to charge a battery pack (7S1P)[ICR18650] with a charger with CC/CV mode and I have a BMS for protection (I've done research to maximise the security of the battery pack)....
1
vote
1answer
147 views

USB UART Bridge with capability of handling fast charge VBus

I am trying to design a charging circuit which support QuickCharge but also I want to add USB-UART bridge to communicate with on board MCU. How can I establish voltage level safe communication ...
3
votes
1answer
3k views

TP4056 - Micro USB 5V 1A - Output pins Current supply

I have "TP4056 - Micro USB 5V 1A Lithium Battery Charger with Protection" as below I have a Li-Ion 3000mAH battery like below Connected them as below Questions: What is the maximum current that I ...
0
votes
1answer
51 views

How can I preserve battery lifespan on an always-on harvester/charging embedded device?

I'm using a GSM device powered by a battery, charged from energy harvesting from a low current source (0 to 200mA, the most of the time 20mA @ 9V.) To charge the 8000mAh 4.2V battery, I'm using a ...
2
votes
3answers
2k views

Why does LM317 burnout when output is shorted in this case?

LM317 voltage regulator has internal short circuit protection alongside with its thermal overload auto-shutdown, but in the circuit below it will simply burnout when the output is shorted. And its ...
0
votes
1answer
35 views

Building a powerbank/powerbrick from laptop battery - Cell quality verification after the fact

I have been researching li-ion batteries for some time and I am familiar with the precautions necessary when working with them... however, I am still learning and realized I made a bit of a rookie ...
0
votes
1answer
36 views

Qi Charger broken magnetic backing plate

My Qi charger module arrived with a broken backplate. It appears to be some sort of magnet. What is the exact purpose of this backplate? Is it meant to amplify the signals or only have them go one ...
1
vote
3answers
171 views

How to drop 5v regular phone charger voltage to 3.7v to run a device, which use 3.7v output battery before

I have Motorola Moto 360 2st edition smartwatch and watch original battery is dead. I have converted smartwatch into table watch in DIY wooden block and added 18650 3.7v battery instead and now its ...
0
votes
1answer
48 views

Zener Diode identification - Ultimate Speed Battery Charger [closed]

Friend of mine came with this: https://www.amazon.co.uk/Ultimate-Speed-Battery-Charger-Motorcycles/dp/B00JKOA7H8 The charger powered up. Display showed battery voltage, but it didn't switched to ...
0
votes
1answer
51 views

Where is current sense on this 3S 40A BMS

I have recently purchased a BMS rated for 3S, 40A (still in transit). Following is pictures for this BMS: Now, according to seller, this has over-current, over-voltage, under-voltage and short-...
-1
votes
1answer
54 views

can i recharge lead acid directly using DC-DC step up module (150 w)

i am new to electronics, and i would like to make a simple lead acid battery charger usign a DC-DC step up module (150 w) i have adjusted the output to be 13.5 volts so shall i connect it directly to ...
1
vote
2answers
106 views

12V battery charger does not work

I have an old car battery charger (12V 8A) that has a 3.5 DC volts on its output instead of 12V. Although i found a similar circuit but i could not understand how it works. I am guessing after the ...
0
votes
0answers
38 views

Help me with name of this type of cable to charge my drone.I want usb to female end connector

I have old remote control helicopter in my toys and I want to charge it via USB.But to purchase it online i am not aware of it's name.Help me with name for connector as shown below. Usb to female end ...
0
votes
1answer
139 views

Charging battery with external charger while powering load

I am building a device which I would like to be able to charge with several different types of external battery chargers (different Icharge within spec of battery, of course). If I understand ...
0
votes
1answer
293 views

Does mobile charger and buck converter have any basic difference?

I have a 2 cell(4.2V)/12Ah deep cycle flooded lead acid battery that i usually charge by 5V/2A smartphone charger. By using this charger it takes 200mA current for charging. Today i got my CC/CV buck ...
2
votes
0answers
50 views

Reverse polarity protection with a MOSFET, am I doing it right?

I'm creating a simple LiPo charger and I would like to add a reverse polarity function to the module. The source voltage is 4.2V, the maximum current draw is 2A. Is this schematic correct? The MOSFET ...
0
votes
1answer
25 views

Can I connect an inverter and a solar charge controller together in parallel with battery terminals?

I have an inverter works on AC mains and has battery charger inbuilt. I have solar panels with a charge controller. Can I connect both power sources wires to battery terminals in parallel. So In case ...
1
vote
1answer
509 views

How to design a circuit to disconnect battery charger automatically?

I want to use an AC to DC 14.4v adapter to supply both my circuit and its battery. The circuit works with 12v and I used a battery during power outage(blackout time). I have prepared the below circuit ...
1
vote
2answers
4k views

Correct charging current for lithium-ion batteries

I am trying to replace a lithium-ion battery for my Bose QuietComfort 35 headphones. I cannot find the datasheet for it. The battery is an AHB110520CPS (AHB110520) by Synergy. It is supposedly an "...
0
votes
1answer
97 views

Can someone explain this part of circuit from BQ500212A?

As the title says, I am struggling to understand what this part of a circuit does. It's part of this evaluation module. Is there any chance the BSS138 transistors will activate without the SNOOZE/...
1
vote
1answer
150 views

Relay not switching immediately if mains off to battery like UPS

Relay not switching immediately if mains off to battery like as backup power. I'm looking for zero cross SPDT relay switching for my project. please help. design is simple two power sources (mains and ...
3
votes
1answer
103 views

Connection problems or burned chip?

I am assembling a board for a wireless charger based on this evaluation module (see here) I own a preheat bed, a hot air gun and a quality soldering iron. I am afraid that after soldering the chip and ...

1
2 3 4 5
15