E-Cigarette Battery Eliminator

This is a simple idea to re-use a battery from a disposable E-cigarette and make a cheap and useful battery eliminator.

In this blog, I use the eliminator to power a Brother label printer, and a Multimeter.

The circuit uses a cheap chinese module that provides battery protection, a micro USB to charge the battery, and a boost circuit, so the unit can replace 6v to 12v batteries. The whole unit costs a few pounds to make.

The 13350 battery in an E-cigarette is a standard industrial battery, and NOT a custom made battery for the E-cigarette market.

E-Cigarette(s) and associated Battery

Typical E-Cigarette

The type of E Cigarette shown above does have an easiely recoverable battery, videos for recovering these batteries are available on you tube. Other E-cigarettes may have batteries that are more ecapsulated, and could prove dificult or hazardous to remove. If in any doubt, DON’T ATTEMPT IT!

13350 Battery recovered from e-cigarette

Lithium Battery Charging Discharge Integrated Module

Lithium Boost Converter Module

The Module shown above is readily available on AliExpress, it takes the nominal 3.7V from a battery, and can provide from 4.5V up to 12V output, stated output current is 2A.

As the circuit/battery is permanently in circuit, an on/off switch is required, to maintain the battery capacity.

Two example installations are shown, for a Brother label printer, and a cheap Chinese multimeter.

Battery Control Module.

Brother Printer Installation

The Brother label printer uses 6 AAA batteries, but can also be driven using an external power supply. Using the external power connector and the battery eliminator makes the unit much easier to use for creating the occassional label. 3-7V-9V-5V-2A-Adjustable-Step-Up 3.7V 9V 5V 2A Adjustable Step Up 18650 Lithium Battery Charging Discharge Integrated Module

Brother Printer Battery Box

Brother Printer with Battery Box

Brother Printer with Exposed Battery Box

Multimeter Installation

Battery Eliminator shown in Multimeter

Front View of Multimeter showing On/Off switch

Applicable Links

Battery Control Module.

Module Specifications

• 3.7V 9V 5V 2A Adjustable Step Up 18650 Lithium Battery Charging Discharge Integrated Module

• Debug before use, the default output is about 9V
• Input voltage 4.5-8V
• The output voltage can be continuously adjusted from 4.3-27V (any voltage above 4.3V and below 27V can be output, and you can adjust the voltage counterclockwise by yourself)
• The charging voltage is 4.2V and the charging current is up to 1A
• Discharge current, the maximum output current of 2A should be calculated by yourself
• Output reference maximum current 5V 1.4A , 9V 0.8A, 12V 0.6A
• The quiescent current is about 0.5 mA
• Overshoot protection Yes
• Over-discharge protection No (it can also be said that there is, 2V cut off the boost but not block the output, the output still has 2V)
• Cut-off boost 2V, depending on the situation, whether to add a protection board
• Size 3.3X2.3X0.9
• For example, the VIN+ terminal is connected to a 5V solar panel, and the BAT+ terminal can output 4.2V to charge a 3.7V 18650 battery
• The OUT+ terminal can output an adjustable voltage, you can adjust how much you need
• Can be used for multimeter modified lithium battery charging