if you have to charge iPhone 4s, consider getting AASaver 2.0.Ģ) other than lighting up LEDs, it can also be used for circuit board experiments, and you can use it to drive any device that draws less than 300mA.ģ) we don’t provide a case. If the batteries are almost dead, they probably can’t deliver more than 30 to 40mA, which is enough to light up LEDs but not enough to drive a motor.ġ) yes, it’s possible, but keep in mind the board cannot deliver more than 300mA even if you use a fresh pair of batteries. The more used the batteries are, the less current you can draw from them. The actual current output obviously has to do with the battery condition - with a fresh pair of batteries, it should be able to deliver 300mA.

Second, all AASaver 1.x have been tested with 300mA of output current. The reason is that at the maximum 1.x can only output about 300mA of current, and devices like iPhone 4s requires 500mA of charging current.

With a pair of fresh AA batteries, it can provide up to 500mA output current, enough for many breadboard circuit experiments or even powering a motor!įirst of all, AASaver 1.x was never intended to charge USB devices (that’s what AASaver 2.0 is designed for). It does not require any external power adapter, which is quite convenient. I also enjoy it a lot as a compact breadboard power supply.

I can use them all! This makes me feel a little greener 🙂 Now I never have to worry about keeping fresh new batteries for my flashlights - I have so many old AA batteries that are pronounced ‘dead’ by various electronic gadgets, remotes, clocks. Even running on low-voltage batteries (starting 0.9V), it can still power the LEDs for a long time. The boost converter generates enough sustained current to power bright LEDs. mobile phones), Lithium-Polymer (LiPo) batteries, as LED flashlight, and breadboard power supply, all from two AA batteries!Īs in the original AASaver, the 2.0 version works perfectly as a small flashlight. Has built-in USB port, LiPo charger, bright flashlight LEDs, and breadboard pin headers.Outputs regulated 5V, up to 500mA maximum output current (actual current output depends on the battery condition).This is possible by using a boost converter, which can bump the low battery voltage to a higher voltage, enough to light up LEDs or even power breadboard circuits.īased on an efficient boost regulator IC, the AASaver is a small and multi-purpose boost converter that can help you harvest the remaining energy in AA batteries. When your electronic devices report that the batteries are ‘dead’ and need to be replaced, do you ever feel frustrated that there is often still a lot of juice in them? Don’t throw away the batteries yet! You can use the remaining energy to do a lot of things, such as powering LED flashlights. The kit comes with one assembled and tested circuit board, one AA battery holder, a pair of bright white LEDs (for use as flashlights), two breadboard headers (for use as breadboard power supply), and two screws and nuts. Assembly and usage instructions are available in the AASaver 2.1 User Manual.ĪASaver is available at Ray’s Hobby Shop.This version adds 5V / 3.3V selectable output.

Flashlight battery guru