lost your charger? how to charge any battery survival-style - lithium iron battery

Just as I needed to take pictures, my camera turned off from low power.
Perfect light.
I suddenly remembered where I put the charger.
3000 miles away.
Everyone has this experience, or a similar experience of looking for a mobile phone charger on vacation.
Here's how to charge any battery to keep doing important things.
Fact 1: all past and future rechargeable batteries can be charged safely if you are not charging too much.
Trickle means low current, just like half an amplifier for a normal camera or cell phone battery.
Fact 2: small incandescent lamps such as flashlight bulbs and christmast tree mini lights become huge current regulators.
This is the battery of my Canon s30.
It has three terminals, marked "", "-", and "T".
I cut the crocodile.
Two obvious fragments.
You don't need a clip, just charge and you can put the wire on it, which may be better anyway so you can know if something is wrong. Warning!
Put on eye protection and don't breathe smoke if anything strange happens!
What is the other terminal marked "T" doing?
Of course, Tammy is like the nursery rhyme!
The meter can catch the battery with his finger.
If the weather gets hot, you do it wrong.
It's actually a "thermal resistor" or something like that.
Temperature sensor.
Some batteries use it to adjust the charging current, and some are just for safety.
"What about digital sensors?
"It will be a constant joke when Americans know Greek and know that numbers are fingers.
But then the numbers became so useful that we forgot to rely on our fingers and now people hardly know how to do anything with their hands.
Anyway, this is a finger used as a digital thermometer.
This reminds me of the joke about the doctor. . .
Security warning: scroll to the bottom if you want to read the security warning.
Here I use my car battery to charge the camera's battery.
I use three Christmas bulbs at the same time as a current regulator to let half an amplifier flow into the camera battery.
This is how it works: the filament heats up as the current through the bulb increases.
This increases the resistance to limit the current.
For example, this is my test for a mini Christmas bulb connected to a desktop DC power supply: volts amp.
5.
051. 071. 5 .
082.
093.
114.
135.
156.
167.
178.
189.
1810 dead.
The fine silk burned out.
I tested two bulbs and the data is the same.
Since my car battery is 13 V and the camera battery is 7 V, there will be 6 V across the bulb.
So I connected the three bulbs in parallel and got about 0.
5 amps flow into the battery.
I can't guarantee 0.
6 amps flow because that will burn out the bulb.
This is some protection for the reverse.
Charge, but be sure to connect the positive and negative terminals correctly.
Now, just stand there for about 15 minutes until your battery is charged enough to take a picture again and you can call or whatever.
Safety warning: do not leave this situation unattended or try to fully charge the battery.
If you charge too long and the camera battery is over 8 volts, something bad may happen.
"Bad things" may include catching fire.
Repeat: you can safely trickle charge any part of your rechargeable battery.
However, if you do not fully understand the rules of this particular type of battery, it is not safe to fully charge the battery.
Car batteries can produce a mixture of oxygen and hydrogen that can be ignited by sparks.
The result of the explosion was sulfuric acid everywhere.
Don't let this happen to you.
For simplicity, this photo shows me working on the battery, but you can easily get the battery voltage from the cigarette lighter in the car, away from the explosion hazard.
Also, don't call yourself.
I haven't heard of anyone being killed by a car battery.
I heard that the other accidents described here are actually happening.
Hope you have a meter.
Find the DC power supply.
Look at your supply voltage, the voltage of your battery, and use Ohm's law to calculate what kind of resistance you need to put between the two to get the correct current flow.
Then go find that resistor.
The heating elements of the toaster or hairdryer can work.
The clothes iron in the photo works for a certain battery and a certain DC power supply.
As described in the previous step, the best simple current regulator is usually a small bulb.
The bulb is great because the resistance rises when the filament heats up and limits the current.
You can only pass through the amplifier without burning it out, so it's like a fuse of its own.
It's a free gift from junk Santa.
Here I use two bulbs in series to limit the current going into gelcell.
Use a multimeter to measure the current in the bulb at different voltages.
Or you can get it cowboy with a small bulb and use it for a few minutes while seeing if the battery is getting hot.
Wear eye protection and don't breathe in smoke!
This step uses desktop power to charge the battery.
Even if we can't find the phone charger, many of us will sit there.
Or we know where to find someone with an electronic product. Now what?
Want to be completely mysterious?
Find "Lithium Battery Charging Control ".
All of this is important if you want to fully charge the battery, let it survive many charging cycles, or avoid litigation.
But we just want to take pictures or chat on the phone.
So what we have to do is: turn left the current and voltage knob all the way.
Turn on the power and connect it to the battery, remember that the red and black wires may be plugged into the wrong socket.
Read the label and unplug if it seems to be arcwelding on the battery.
Adjust the voltage and current limit knob to 500 mA (0. 5 amps)
Flow into your battery.
If you want to take a closer look at how much current the expert has used.
But a few minutes and a half will not damage any battery that is enough to hold a modern camera or phone.
My electronics staff told me that my 7 V voltage limit was set to 8 v. 2v li-ion battery.
The fact that this is usually the luxury.
The main point of this method is to trickle up anything without knowing the performance of the battery.
If you really have to do something else when charging the battery, you 'd better connect something in a few minutes to disconnect it.
The whole point of this note is that we don't fully charge the battery because we don't know how to charge it and we're in a hurry.
We just have to charge enough to get back to our regular job.
After we start using the battery, the phone or camera will tell us about the charging of the battery.
So we only charge about ten minutes.
The battery capacity of my camera is 1200 mA/hour.
So if it is fully discharged, we charge at 500 mA and it takes more than two hours to fully charge.
Some types of batteries may be severely damaged due to overcharging.
Some are just a little damaged.
This photo shows how my golf cart can avoid overcharging.
There is a built-in appliance timer that automatically turns off the charger.
It won't let you charge for more than 24 hours. That's it!
Enjoy it carefully!
To make your own external battery pack, check at the splofty boost pack.