Lithium Ion
Protection
Circuits |
|
Lithium ion
cells have an operating voltage range from 2.8v absolute minimum to
4.2V absolute maximum. Charging the cells beyond 4.2V will cause
them to heat up and ultimately explode and ignite. Discharging a
cell below 2.8v will damage the cell rendering it useless. A
protection circuit is essential to keep the cells in balance and
ensure proper charging and discharging.
These
circuits are suitable for hobbyists wanting to use Lithium polymer
and Lithium ion cells. We do not accept liability/responsibility for
the safety of operation of these circuits and suggest that when
charging check the voltage balance and heating of any cells
frequently during the charging period. |
Single Cell (1S) Protection Circuit
3.7V 2A
Price R25 plus VAT = R28.75 |
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Two Cell (2S) Protection Circuit
7.4V 3Amp
Price R37 Plus VAT = R42.55 |
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Three Cell (3S) Protection Circuit
11.1V 3Amp
Price R80 plus VAT = R92.00 |
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Three Cell (3S) Protection Circuit
11.1V 7Ah
Price R100 plus VAT = R115 |
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Four Cell
(4S)
Protection Circuit
14.4V 3Amp
Price R98 Plus VAT = R113
|
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Four Cell
(4S) Protection Circuit
14.4V 15Amp
Suitable for Heavy duty packs for Drills
Price R150 Plus VAT = R172 |
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Five Cell
(5S) Protection Circuit
18V 15Amp
Suitable for Heavy duty packs for Drills
Price R170 Plus VAT = R195 |
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Lithium Ion
Chargers |
|
A lithium ion
cell operates in the voltage range min 2.8V to 4.2V Max per cell.
This means you need a 4.2V charger to charge a single cell properly
to full voltage. Two cells in series will need an 8.4V charger, 3
cells will need a 12.6V charger and 4 cells ,16.8V.
Applying a
voltage significant higher than the required voltage will activate
the protection circuit prematurely and it will shut down the charge
before the cell reaches full charge.
We have
the following Lithium ion chargers |
|
Our range of chargers show a red led while charging and changes to
green when fully charged.
We also build lithium ion packs according to your spec - Call us for
quotes.
Charger pricing per table below
1 Cell - 4.2V 2Ah R197.80
2 Cell - 8.4V 2Ah R224.25
3 Cell - 12.6V 2Ah R253.00
4 Cell - 16.8V 2Ah R287.50 |
 |
|
Single 18650 cell charger
Rating 4.2V 550mAh
Price R80.50 Incl VAT
Note: Cell not included |
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