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Results tagged with lithium-ion
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user 36526
Questions regarding Li-ion (lithium-ion) cells and batteries, including proper charging, protection, and usage.
1
vote
Replacing li-ion cells in handheld drill battery
IF the original battery pack for the drill was li-ion, then it will have a protection board and also it will likely include balancing on that board in the charger, so the above problem mentioned by Ru …
- 2,490
1
vote
Accepted
How to calculate lithium-ion battery energy density
My suspicion is that the published specs have been greatly over estimated. Also, I believe that the watt hour calculation that you have done is slightly overestimated as well.
The 12 volt lithium ion …
- 2,490
3
votes
Accepted
How are cell failures handled in large lithium battery packs?
I imagine from the questions that you have asked that you are planning some project that may require a high capacity lithium iron phosphate battery that you would like to build yourself.
The only la …
- 2,490
1
vote
Using balancing charger with Li-Ion protected cells
Can your 2s charger not charge in normal or 'unbalanced' mode with the 3 wire balance connector not connected? Almost all chargers do.
So why balance charge your 2s battery? The TP4056 chips should e …
- 2,490
2
votes
Li-po - li-ion chargers
I agree with the answer given by Peter Smith in that the Lion and Lipoly can be considered the same for charging purposes. They certainly use the same algorithm.
However, I own 3 different battery c …
- 2,490
1
vote
Algoritham to caluculate State of Charge(SOC) & State of Health (SOH) of the LI-Ion Battery?
The scope of your question is very large, but I will try to give you an example of a relatively simple setup that you might be able to apply to your project.
My electric battery powered lawn mower ha …
- 2,490
1
vote
Accepted
Li-ion swappable 18650 in parallel - preventing mixing charged&discharged cells
I think that the resettable ptc fuse is not the best way to engineer your solution. I agree that you need some sort of protection, but ptc resettable fuses work in an interesting way that isn't ideal …
- 2,490
2
votes
Accepted
How to design a lithium-ion battery pack?
Lots of questions! Instead of just pointing you to a certain IC or battery, I will try to answer your questions so that you can understand the concepts and pick or build your own battery.
What prec …
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3
votes
How to turn-on laptop's battery pack after replacing cells?
Every laptop battery pack that I have taken apart has had a battery management chip connected to it. It is impossible to miss as it typically runs the length of the battery pack and packaged with the …
- 2,490
1
vote
How charge custom Li-ion pack 36v 10s6p
I am guessing that you mean a 10s6p, not 10X? The lithium ion BMS board that you linked to is for a 10s battery.
Are you building your battery or have you bought it? If you are building it, then y …
- 2,490
1
vote
Scratched 18650 Lithium Battery safe to use?
Be very careful! That scratch is very near to the positive pole, and if those 18650 are the same as all the others that I have used, the bare metal that you have exposed will be the exact same as the …
- 2,490
5
votes
Charging 7.4V Li-Ion battery
The answer to your question is: 8.4 volts. This will give you an idea of the voltages you will be working with.
However, first read and please understand the comments about safety of these li-ion ce …
- 2,490
1
vote
2
answers
2k
views
Confusion regarding the design of Lithium Ion PCB
From this site and many others, it seems to be universally recommended that a lithium ion battery not be discharged lower than 3.0 volts. Most actually recommend to stop discharging at around 3.3 vol …
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4
votes
How to gauge safety of cheap Lipo batteries?
I have randomly purchased several of these relatively cheap lithium ion batteries from ebay, originating from China. I have a fairly high quality battery charger/analyzer that I use to test these bat …
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