Lithium batteries are disposable/non-rechargeable batteries, often found in button/coin-cell form and sometimes in cylindrical cell form. Lithium batteries are used in portable consumer electronic devices, including watches, cameras, calculators, thermometers, etc.
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Recycling a notebook battery pack
I've got an old battery pack ( from DELL ) to dismiss because batteries are gone. The battery contain an SMD board that I think being the charger module, and I would like to ask if that module can be ...
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How to Calculate Theoretical Capacity and Energy Density of Li Ion Battery
Specifically if the cathode and anode are known materials how do you calculate the theoretical capacity and energy density of the full cell? For example if you have a Lithium Iron Phosphate cathode ...
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Charging phones via solar battery chargers
For a school project, I want to make a solar iPhone charger (specifically for the iPhone 4) and I've spent about a week looking up stuff all over the Internet, and I'm stuck for the hundredth time. ...
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From Li-Ion to Li-Po battery: design a new battery pack for old mobile phone
I have an old working mobile phone. The battery, a compatible 3.6V 500mAh Li-Ion is almost dead (the original one was 800mAh). Is it possible replace the battery pack with a 1200mAh or so Li-Po ...
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Large battery, small component. Issues? [duplicate]
I have a basic question which I wanted to run by some better informed people than me.
I'm planning on building a very simple circuit which takes a 12v feed from a broadcast camera and uses it to ...
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Lithium-ion rechargeable battery, shelf life
For Lithium-ion rechargeable batteries, that have never been charged, or been charged like 2-3 times at most, some 2-3 years back, and having since-then been in packaged condition, what should I ...
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What are some good methods for adding charging control/signaling for a docking wireless system with a rechargeable battery?
I'm working on a device that will dock to charge very similarly to a cordless phone. The dock outputs 5V DC, which is already very low risk, but I would prefer to add a control pin that turns on the ...
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Li-Po shield for Arduino with in-line recharging, soft-off and voltage protection?
I'm looking for a shield for my Arduino (or a breakout board that I can adapt for the purpose). It should have these abilities:
JST connector for my single-cell battery.
Over- and Under-current ...
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Regulator and charging in a portable device
There are quite a few similar posts on this subject but I'm a little confused about the best way to proceed in my specific project. All my previous regulators have been linear types (eg: 7805, LM317 ...
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replacing disposable lithium-thionyl batteries with rechargable lithium batteries?
I have a device that takes 2 disposable 3.6 V 1/2AA 1100 mAh lithium-thionyl batteries and I would like to replace them with rechargable ones. It is a device that measures angles in wireless mode, and ...
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Pulse-powering heavy loads with a coin cell
Lithium coin cells are rated for fairly low standard current draws, on the order of 1 to 5 mA. Also, while they allow greater pulsed current draws (i.e., periodic bursts), this appears to be ...
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Making a lithium polymer circuit
I want to create a circuit that will power my Raspberry Pi using Lithium Polymer. My knowledge of LiPo is rather low and I believe they can get dangerous if used incorrectly so I turn here.
THe ...
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462 views
USB to 3-cell Lipo charger?
I have a data-logger project that needs to run from a 3-cell Lithium Polymer battery. It has 5v and 3.3v regulators to provide regulated power to the system.
I want to build the battery into the ...
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430 views
How much lithium in lithium polymer batteries?
This document summarizes aircraft travel guidelines for batteries:
http://safetravel.dot.gov/documents/airline_passengers_and_batteries.pdf
It has two categories of lithium batteries:
8 grams or ...
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How can I safely charge 3 lithium 18650 batteries to use in one pack?
I'm working on a project to make my own super-bright bike taillight using an emergency flasher LED (something like this:)
The LED package requires a 12V input, but from what I've read from other ...
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558 views
Creating Li-Ion charger with step up to 700mA from 500mA?
Canon apparently hasn't ever herd of something called USB-charging. The factory AC adapter for this battery(NB-5L) output's 4.2V's at 700mA. Most standard USB chargers output 5V at only 500mA. Would ...
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What are the tolerances for the maximum current a battery can supply?
After a lot of research and experimentation I have come to learn that the sentence "This is a 1.5V, 2800mAh battery" is entirely a lie.
(i.e., the potential difference between the terminals of a ...
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Lithium Button Cell Characteristics
I am working on a small wireless sensor platform and trying to figure out power supply options. My power budget is approximately: .2mA constant, ~15mA for .1s every 2-3s, and 60mA for 10s very ...
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MAX1555 Alternatives
As you know, the MAX1555 is a popular single cell lithium polymer charger. It can take USB power directly, restricting the charge current to 100mA or so.
Are there any other MAX1555 alternatives ...
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Can I drop 4.5 V to 3.7 V with a diode?
I have an RC helicopter with a dead 250 mAh lipoly battery with a voltage of 3.7 V.
Could I use 3 button cells at 4.5 V and a diode with 0.7 voltage drop
to power the circuit, which is somewhat ...
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Smallest lithium battery backup?
I'm considering putting a small lithium battery on my Super OSD Pro boards. The battery would provide power to the RTC. I am wondering how small can you get a battery? I don't really care about ...
