Hacked Mobile Battery. Start Up Project 13

4AHere is a “Green Project” for you to reuse the discarded Mobile phone battery. When I purchased a new Mobile phone, the old one became junk. But it has a very good high efficiency and long lasting Lithium Ion battery rated 3.7 V, 1800 mAh. So I decided to reuse the battery for an alternate purpose. A simple power supply with DC- DC Booster capacity and a White LED emergency light. It can be charged from any USB charger or Laptop. Its output can be adjusted from 3.7V to 37 volts. The DC-DC Booster module boosts 3.7V from the Mobile battery up to 37 volts when turning the pot. The Power supply unit is ideal to power all projects that require 3.7 V to 37V. Its emergency light helps to do work in low light conditions. You have a number of Mobile battery in your Junk box. So try this Green project .It is a worth.
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Boost Charger for Mobile Phone Battery. Start Up Project 13.

A1Why allowing Mobile Phone battery for a “Deep Sleep”. Many times we replace the Mobile battery without knowing this Deep sleep property of the battery. Actually the battery is good and we can easily revive the battery from deep sleep just giving a “Shock”. The trick is very simple and you can use the battery again. How the Mobile battery enters into deep sleep? In the Mobile phone battery, there are three pins to connect the battery. One is Positive and the second one is Negative for charging. Then why a third pin? It is known as BSI Pin (Battery Status Indicator). If we are not properly charging or leaving the battery unattended for long time, the Mobile phone will not detect the battery for charging. So by removing the battery and giving a “Boost pulse”, the battery will “Wake up” from sleep and starts charging. Best trick. You need only an USB cable and two pins. You save 350 -500 Rupees. Let us learn the trick.
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Power Bank. Simple Design 23


Here is a Power Bank for charging your Mobile phone while traveling or in the event of power failure. This power bank can deliver 4.5 Volts with reasonable current to charge the Mobile phone quickly. It can charge the Mobile phone 3-4 times . The Power bank uses a 4.5 V Rechargeable battery that can be charged using the Mobile phone charger or from the USB port.
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Useful Tips to Charge Cell Phone Battery

Mobile phone battery is a high efficient Lithium Ion or Lithium Polymer battery that can deliver much power for long time. In an ordinary Mobile phone, a fully charged battery can power up to 3 or 4 days. But in Smart phones, the battery drains too fast because many applications are running simultaneously. To extend the life of battery we need to know some facts about the charging because the most important cause of battery breakdown is improper charging.
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