All Questions
Tagged with load battery-charging
17
questions
1
vote
6
answers
397
views
Solar seller provided wiring diagram: Is this diagram of any use or unreliable/inefficient?
A solar equipment seller provides this wiring diagram (not mine):
There are three terminals on the solar charge controller: Solar IN, ...
- 1,367
1
vote
2
answers
109
views
Charging IC problem: charging restarts every 12 hours without load on battery
I'm using the MCP73837 charger IC.
After charging is finished the IC goes into charging mode again every 12 hours for 6 hours, even though the battery is connected all that time with no load.
...
user220456
0
votes
3
answers
533
views
Can a battery's open circuit voltage be measured without actually disconnecting the load?
Is there:
a specific tool for it or
a method for its calculation which includes the terminal voltage
I'm actually in need of a method which would not require disrupting the circuit by removing the ...
- 43
1
vote
2
answers
2k
views
Do these TP4056 charging boards have built-in load sharing?
I'm trying to design a simple rechargeable circuit that when plugged in, safely charges an 1S 18650 li-ion while also powering a load. I've been researching for awhile and can't seem to find ...
- 31
1
vote
1
answer
1k
views
For Lipo charging, why is TP4056 more popular when only MCP73831 performs load sharing?
I'm trying to power a simple circuit (0.25 mA LED) that will be used both when connected to a USB charging cable and by a single 3.7 C Li-ion cell (when disconnected).
Between the available hardware ...
- 31
0
votes
2
answers
203
views
NiMH battery management
This follows on from a post I made about my front door (link at bottom of this post).
In essence I have a door with a 12 V motor in it, which is activated by a 12 V pulse. The power supply is only ...
- 31
0
votes
0
answers
304
views
How to calculate portable power station draining with other loads?
I want to buy a portable power station, it's basically a battery, the battery capacity at 14.8V/15Ah is 222Wh, I want to know how many times it will long for some loads, such as a simple light , or ...
- 1
1
vote
3
answers
190
views
Photovoltaic system that charges a Li-Po battery while supplying a 1.4V load
I am a mechanical engineering student and not that familiar with electronics.
I am currently trying to establish a photovoltaic (PV) system that can charge a 3.7V 100mAh lipo battery and deliver ...
- 11
0
votes
1
answer
2k
views
Is it ok to charge a battery with TP4056 while using it, if
Question
Is it ok to charge a battery with TP4056 while using it, if the current consumption of the load isn't higher than the charging current of TP4056? and if not why?
Trying:
To have a 200mah Li-...
- 111
0
votes
1
answer
350
views
Auto disconnect the load while charging the battery
Here is a tentative schematic that would use the battery (3.7V, 3500mAh single 18650 battery) to power the load under normal circumstances. The charger is disconnected at this point. When the AC-DC ...
- 1,340
1
vote
2
answers
940
views
How are series connected batteries of different voltages (or even same voltages) charged "equally"?
I am trying to understand conceptually, how a series bank of batteries is charged "uniformly". Let's take the example of of six 6V AGM batteries for a 36V golf cart. The charger is 36V nominal but ...
- 258
1
vote
2
answers
1k
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 ...
- 111
13
votes
2
answers
23k
views
Using TP4056 module to charge battery while load remains connected
I need a circuit that utilizes the tp4056 breakout board to power a NodeMCU ESP like so:
tp4056 USB port connected: 18650 battery charging and NodeMCU running of USB
tp4056 USB port not connected: ...
- 179
2
votes
2
answers
593
views
Charging lithium-ion battery of 3.7 V
I have a device in which I have used a 3.7 V lithium-ion battery as the power supply. For charging this battery I am using a TP4056 module.
When I connect a battery to the TP4056, the battery fully ...
- 49
-1
votes
4
answers
3k
views
Battery mAh meaning
What exactly does mAh rating means? I know that it means the milliamperes supplied by the battery in one hour but i need a more conceptual and practical definition/example.
How does mAh rating tell ...
