Mega Powerbank for Campers

an easy and cheap DIY big powerbank for campers

Step 1: Part List

i use:

* 12v 18Ah Lead Acid Battery

* 10A solar charge controller

* 30w 18v solar panel

* 12-24 to 5v 2,5Ah dc to dc converter

Step 2: Build It

• put the controller and the 5v converter with hot glue at the top of the battery and connect the wires

• add a 4 pin connector to plug and unplug the solar panel easily

• add the usb ports on 5v converter and a connector for 12v output

Step 3: Connection Diagram

• add a fuse on the (+) of battery

• add a switch for the 5v converter and one for 12v if you want

• add if you want a led dimmer

do not connect anything direct on the battery if not needed.

the solar controler have over-charging /over-discharging protection

Step 4: End..

now can have energy for days with no sun..

Comments

[emrude]

Very nice build. Thanks for the write-up.

[andreash79]

thanks a lot too!!

[3rdiii]

How much juice is needed to power a lamp or refrigerator

[bace1978]

for lamps. choose led lamps. very efficient and lot of light

[andreash79]

you are right! thanks

[bace1978]

that is approx a 4.5 ah

[bace1978]

minimal amount for peltier element style cooler box 40_50wats 12 volt

[Yonatan24]

It depends...