Diy Powerbank Out of Waste 28000+ Mah
by parvgupta001 in Workshop > Science
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Diy Powerbank Out of Waste 28000+ Mah
this is a big battery power bank to make a difference
Why U Need to Make It
the power banks in the market aren't enough to charge your tablet and smartphone simultaneously multiple times
batteries are lying around in ur house
u want to learn something new by building your own power bank
batteries are lying around in ur house
u want to learn something new by building your own power bank
About the Batteries THEY ARE LIKE LEGO BRICKS
these are 18650 batteries different from regular AA batteries in size and capacity
one 18650battery is equal to 9 AA batteries in power
even they are rechargeable
they have the highest power to weight ratio
and even last around 4-5 years or 300 cycles
tesla motors used these type of cells in Thier cars and other projects
i got them from my old powerbank,old laptop batteries and from the junkyard for FREEEEEE
one 18650battery is equal to 9 AA batteries in power
even they are rechargeable
they have the highest power to weight ratio
and even last around 4-5 years or 300 cycles
tesla motors used these type of cells in Thier cars and other projects
i got them from my old powerbank,old laptop batteries and from the junkyard for FREEEEEE
What You Need
1.batteries-18650
2.cardboard box
3.powerbank circuit
4.tools
2.cardboard box
3.powerbank circuit
4.tools
Gather All the Stuff
Lets Start With the Box
cut out the cardboard and tape it up in the shape of a box
make sure that you have a good quality of cardboard bcoz this will only determine the build quality of our powerbank
make sure that you have a good quality of cardboard bcoz this will only determine the build quality of our powerbank
Tape Up the Batteries
make a rugged and durable tape joint all through
Battery Testing Time
make sure that none of the battery is dead
max charge voltage 4.2v
min idle voltage 3.6v
during use min voltage 3.2v
try to recover the dead batteries by giving them a jolt of electricity
if they regain their capacity then we can use them if not then they are of no use here
max charge voltage 4.2v
min idle voltage 3.6v
during use min voltage 3.2v
try to recover the dead batteries by giving them a jolt of electricity
if they regain their capacity then we can use them if not then they are of no use here
CONNECT THEM IN PARALLEL
i used soldering to connect them that may not be the best way of connecting
but there are several ways that are more healthy for the batteries but difficult for me to do
but there are several ways that are more healthy for the batteries but difficult for me to do
Attach a Connector to the Pack
attach connectors to the power bank circuit and the battery pack
plug them together and you are ready to go
plug them together and you are ready to go
Everything Is Done
connect a usb cable to the power bank circuit and plug it into your phone
THANKS
so if you like my this project perhaps you may some of my others