Sony 18650VTC4 C rating?
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I am sure someone that knows a lot more than me will come along a help you but this seems like some pretty good information.
With 30A discharge 2100mah rechargeable 18650 battery for Sony 18650VTC4, View battery for Sony, Sony Product Details from Shenzhen Honghaosheng Electronics Co., Ltd. on Alibaba.com
Hope it helps some until more suggestions.
With 30A discharge 2100mah rechargeable 18650 battery for Sony 18650VTC4, View battery for Sony, Sony Product Details from Shenzhen Honghaosheng Electronics Co., Ltd. on Alibaba.com
Hope it helps some until more suggestions.
no
capacity multiplied by c-rating equals amp rating.
when written into a mathematical formula, the "C" literally translates into capacity. the number that suffices as the "rating" is simply a multiplier. for example, a 5C battery literally means the amp rating would be the capacity multiplied by 5.
so a 2500mah cell that's 12C rated would be a 30 amp cell.
12C (multiplication so we add the symbol...)
12*C
C=2500mah (but we need to convert to amps for the purpose of using whole numbers)
milli=thousandths, so
C=2.5Ah
then we bring down the original problem with the known value substituted...
12*2.5A=30 amp hour drain capability
EDIT: with the discrepancy between resellers capacity ratings on the sony vtc4 cells, we can use the lower rating of 2000mah for easy calculation.
they're a known 30 amp battery.
30 amps divided by 2000 mah (2 Ah) gives you 15C
to check the math...
15*C
C=2
so 15*2=30
that's two cells with differing capacities and the same amp output. notice the c-rating is different to get the same amp output at different capacities.
capacity multiplied by c-rating equals amp rating.
when written into a mathematical formula, the "C" literally translates into capacity. the number that suffices as the "rating" is simply a multiplier. for example, a 5C battery literally means the amp rating would be the capacity multiplied by 5.
so a 2500mah cell that's 12C rated would be a 30 amp cell.
12C (multiplication so we add the symbol...)
12*C
C=2500mah (but we need to convert to amps for the purpose of using whole numbers)
milli=thousandths, so
C=2.5Ah
then we bring down the original problem with the known value substituted...
12*2.5A=30 amp hour drain capability
EDIT: with the discrepancy between resellers capacity ratings on the sony vtc4 cells, we can use the lower rating of 2000mah for easy calculation.
they're a known 30 amp battery.
30 amps divided by 2000 mah (2 Ah) gives you 15C
to check the math...
15*C
C=2
so 15*2=30
that's two cells with differing capacities and the same amp output. notice the c-rating is different to get the same amp output at different capacities.
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So you divide the mah by 1000, then divide the answer to that into the amp of the battery which in this case sony says 30. So using the reported mah of 2100 the c rating of a vtc4 is 14.2857142857. Pretty cool thanks
No no no, don't make things so complicated.
For a 2100mAh battery the C rating is 2100. So 1C = 2100
This is a reference which can be used for charge current: up to 0.7C is considered safe and doesn't shorten battery life so 0.7 x 2100 = 1470 mA charge current.
Then there's maximum discharge current which can't be calculated but has to be given by the manufacturer and can also be given as a C value: say the manufacturer says the maximum continuous discharge rate is 2C then that means that the given battery (C rating of 2100) can take a continuous discharge of 2x 2100 = 4200mA (4.2A)
But that's just a few examples how the C rating is used. What you asked is what the C rating is: it's the number in milliamps the battery is rated for.
For a 2100mAh battery the C rating is 2100. So 1C = 2100
This is a reference which can be used for charge current: up to 0.7C is considered safe and doesn't shorten battery life so 0.7 x 2100 = 1470 mA charge current.
Then there's maximum discharge current which can't be calculated but has to be given by the manufacturer and can also be given as a C value: say the manufacturer says the maximum continuous discharge rate is 2C then that means that the given battery (C rating of 2100) can take a continuous discharge of 2x 2100 = 4200mA (4.2A)
But that's just a few examples how the C rating is used. What you asked is what the C rating is: it's the number in milliamps the battery is rated for.
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yes.
more than welcomed.
sorry. i come from a different hobby background.
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