Wat is the max can draw?

[Gerard Fivewin]

Suppose i have a fabricated quality powerbank with 4 li-ions each 2400Ah. Suppose i also have a joule thief 5v to max 20watt 230v ac built-in in a fitting. Can i connect 3 x such fittings to the powerbank with each 20watt bulbs?

If not, what is the max wattage i can connect to this powerbank?

[NEOH]

Suppose i have a fabricated quality powerbank with 4 li-ions each 2400Ah. Suppose i also have a joule thief 5v to max 20watt 230v ac built-in in a fitting. Can i connect 3 x such fittings to the powerbank with each 20watt bulbs?

If not, what is the max wattage i can connect to this powerbank?

Typo ... 2,400 mAh, not 2400Ah

35 Watt-Hours = 4 Batteries x 3.7 Volts x 2.4 Amp-Hours

I will leave the final computation for you.
HINT: How long can the 35 Whr Battery Bank last with a 60 Watt load connected?

[Gerard Fivewin]

Thanks for your reply. I in fact want to ask, can i have a load of 60 watts? Will the three bulbs in my example lightup?

I presume if i want load an airconditioning with such one powerbank as above and inverter of 5000watt it wont start up.

[NEOH]

Yes, I know what you asked, but I am not going to "give you a fish".
You need to learn "how to fish".

Do you understand this calculation?
35 Watt-Hours = 4 Batteries x 3.7 Volts x 2.4 Amp-Hours

If you do, the answer this simple question ...
How long can the 35 Whr Battery Bank last with a 60 Watt load connected?

Reply with answer ...

[Gerard Fivewin]

Perhaps its better that i refrase the question:

How can i know the max current draw rating of a li-ion 18650?

[sensij]

Perhaps its better that i refrase the question:

How can i know the max current draw rating of a li-ion 18650?

Look at its datasheet. Broadly speaking, some cells are designed to deliver high power, others have better capacity but a lower discharge limit.

[Gerard Fivewin]

If it says:
Rapid discharge current 1.3A
Standard Discharge current : 0.56A
Max pulse discharge current: 2.6A

Does this mean that I can have a load of max 2.6A ??? How about if 4 in paralel?

[sensij]

You'll need to be able to answer NEOH 's question to do anything with these. 1.3 A * 3.7 V = 4.81 W. 4 in parallel would deliver 19.24 W, maybe barely enough for a single 20 W bulb at full brightness.

[Gerard Fivewin]

If i read the above calc of 35W/h and 60watt load i can lightup less than half hour. Can i?

My intention is to lightup 3-4 minutes 3 bulbs as bright as possible with a infrared nightsensor switch which i can define the delay time myself.