Charge/Discharge Protective Circuit Board for Rechargeable Li-Ion Batteries (17.4mm*1.9mm)

SKU: 26112 (Added on -)
Price:
US$
1.63
Shipping: Free Shipping To UNITED STATES
Dispatch:
Ships within 7-10 business days
Direct: Worldwide US
Charge/Discharge Protective Circuit Board for Rechargeable Li-Ion Batteries (17.4mm*1.9mm)
This SKU 26112 is available in US direct. US: 901026112
The charge / discharge protective circuit board is designed for 3.6V Li-ion battery. The protective circuit is built-in the battery to prevent 3.6V Li-ion battery from over-charging, over-charging and from discharging current more than 10A.

- Protection Circuit Board for 3.6V Li-ion battery pack
- Designed for 3.6V Li-ion battery
- Prevents 3.6V Li-ion battery from over-charging, over-discharging,and from discharging current more than 10A
- Dimension: 17.4mm x 1.4mm
Dimensions: 4.33 in x 0.67 in x 0.08 in
Weight: 0.04 oz

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Quantity 3+ units 5+ units 10+ units
Rate USD$ 1.45 shipped USD$ 1.44 shipped USD$ 1.43 shipped

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Customer Reviews

Average Customer Review (14 customer reviews) 5

100% of customers would recommend this product to a friend (14 out of 14)

  • 5 star: 11 (0%)
  • 4 star: 3 (0%)
  • 3 star: 0 (0%)
  • 2 star: 0 (0%)
  • 1 star: 0 (0%)

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  • Works well, good value.

    posted by nevik on 19:04:23 G11T 26/11/2013 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: I bought 15 of these charge/discharge protective circuit boards last year and found that they all worked well. I fitted one to each battery in sets of 4 and also bought DX Kapton tape, SKU5442 to insulate them and bind the cells together. I ordered an extra 3 charge/discharge protective circuit boards this time to give me enough to make up another set of 4 cells plus 2 spares.

    Cons: None

    Other: Well worth the money, especially when buying a large number to achieve the quantity savings.

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    • Overall
      5
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      5
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      5
  • Cheap protection for Li-Ion single or series multi-cell applications

    posted by Firedog91902 on 00:26:50 G4T 07/04/2013 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: Discharge cut off protection below 2.75v or 10A.

    Cons: Reset not automatic even when all voltages removed. I've found the best method is momentary short of the neg (battery) to neg (output) via a push button switch or springy tab solder to board.

    Other: Li Ion cell can not be over discharged without suffering damage and shortened cycle life. This circuit offers inexpensive protection for both single cell and higher voltage multi-cell applications.

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    • Overall
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      5
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      5
  • Good PCM, but need upgrade

    posted by Zigger on 05:39:35 G1T 28/01/2013 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: Good PCB, good quality factory soldering. Also good solder pads, easy to use. Terminal voltage rating not very good, but acceptable. Short circuit protection also works well.

    Cons: Low work current in this version - about 3,5 - 4A max. I need about 7-8A, so last time i brought this PCM 2x in quantity for resoldering. I remove chip from one board and solder it to empty place on another for more current rating.

    Other: Good buy for low current applications (2-3 A), need upgrading for more current ratings

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    • Overall
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      5
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    • Usefulness:
      3
  • Buy a bunch, and start soldering

    posted by ironsmiter on 10:59:38 G1T 15/01/2013 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: Perfect form factor for 18650 laptop cells. Good price Nicely sized connector strips.

    Cons: The rated 10A is WAY overkill for single cell usage even if it does trip before you get there. No gasket or washer, to keep it properly spaced on the bottom of the cell when making a protected battery.

    Other: Get a bunch. have a few spares. If converting unprotected cells, or replacing failed circuits, they work great.

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  • very usefull

    posted by rombox on 01:46:55 G1T 03/01/2013 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: the most important thing is that you don't have to build it yourself.after using it intensively i can tell that it certainly saves your liion from bursting into pieces and killing everybody around.it protects from allmost every error in charging and using the battery.however it is important to know what you do

    Cons: values for the voltage cut are pretty much not equal and exact. short circuit protection is very aggresive and disconects faster than the 10Amps specified.

    Other: i bought and i will buy more. you can buy with confidence this very cheap but very usefull item

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    • Overall
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  • Use it before it's too late

    posted by ZdenekJi on 08:18:15 G12T 23/12/2012 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: This protection circuit fits on the negative (-) side of standard 18650 lithium cells found in laptop batteries. It actually has 3 wires in the shape of thin stripes. The positive wire is the long one. It only taps the positive terminal of the battery. The shorter negative lead is connected to the battery's can and it is connected internally to MOSFETs that can break the circuit if certain conditions are met. Even though it shouldn't be used like that, it is entirely possible to use this circuit to stop the charging when the voltage reaches its maximum value.

    Cons: It is incompatible with batteries that contain more cells in series. When first installed, the circuit is open by the protection and one has to connect the in- and out-negative leads briefly to kick-start the battery. Otherwise, one may connect the charger. When in the OFF state, the circuit will never come on by itself, an external voltage must be applied.

    Other: This is a must-have spare part for your drawer.

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    • Overall
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      5
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      5
  • Cheapest Product EVER.

    posted by perdification on 05:16:55 G10T 14/10/2012 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: Really cheap protection circuit, SAVED MY LIFE A FEW TIMES and prevented the battery from blowing up when I plugged it into a cheap china made faulty charger. This is a must get for all 18650 batteries.

    Cons: Makes the battery longer than the standard 18650 size, may not fit for some torches/devices/battery holders designed for 18650's.

    Other: A MUST for all 18650 batteries! You NEVER KNOW when you'll make a mistake, this thing will save your life!

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    • Overall
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      5
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      3
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      5
  • Seems to work

    posted by Meow88 on 11:18:59 G11T 10/11/2011 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: Very cheap
    Well built
    Long enough tabs
    Fast delivery
    Seems to work fine.
    I bought these to replace a stock protection circuit i had on a blue trustfire 18650. I had stripped out the trustfire's circuit and transferred it to my diy parallel 8 cell pack.
    It couldnt run my voltage booster circuit connected to a 6W 12V fan, because the initial current surge kept tripping the protection circuit. It was too sensitive.
    Swapped to this chip and it could handle the surge current without tripping. Great.

    Cons: No cons to speak of. If it cant handle short circuits as some DXers have tested, at least the FETS burn out first, instead of your battery pack exploding. Hopefully this is the worst case scenario that could happen.

    Other: Get it, its cheap. I soldered them to JST cables i bought from DX, heatshrunk the tabs and wires to protect them from short circuiting. Now i have a detachable protection circuit to use on my unprotected battery packs.

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    • Overall
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      5
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      5
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      5
  • Good protection

    posted by lukasandrysik on 05:59:29 G1T 18/01/2011 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: Cheap (considering free shipping with only one piece of it) Small, compact form (fits 18650 cell)

    Cons: Cutoff voltages could be more...considerate. I'm afraid the battery taken to these voltages will die fast - but IT IS ONLY PROTECTION - not charger. It is supposed to be the last protection against fire, explosion... when normal charger breaks or when something short-circuit the cell

    Other: Cutoff voltages can be seen in my video. Good as protection circuit - not charger!!!

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  • Works Fine

    posted by Sergiosulaco on 06:07:57 G1T 10/01/2011 certificated customer

    Involvement Level: Expert (understands the inner workings)

    Pros: Simple and effective PCB. I use it with an old-cordless Screwdriver (KC9036 from Black & Decker) which was working with a NiCd destroyed battery. Two 18650 cells and this circuit and returned to live!! No more discharged screwdriver when you need it!

    Cons: It would be nice DX gives an adaptor ring or something to tight de PCB to the battery body. Its installation would be easier and the result better, with a paralel PCB to a parallel battery. An easy fixable issue though. No more cons.

    Other: The PCB works pretty well. i think I'm using it in its limits.

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