Teardown: 2600mAh Solar Panel Power USB Battery Charger for Cell Phone iPhone Black

Bought this on eBay so I can use the battery pack to charge my cell phone (and digital camera,PDA,MP3,MP4 etc) while traveling. It cost me around $18 shipped. The battery pack has a solar cell built-in to charge it off from sunlight (particularly useful at off-gird locations). White LED lights are present to use the USB charging pack as a flash light.Came with the following stuff in box:

1 x Mini USB cable
1 x OTG cable (used for charging through data cable of your own cell phone)
1 x Mains USB charger
6 x Adapters (iPhone, Sony Ericsson, Samsung, Mini USB, Nokia, PSP)
1 x AC mains charger
1 x Manual (very hard to understand)

Unboxing of the 2600mAh Solar USB Charger

However, as compared to my previously bought solar chargers which had no charge control and died quickly, this one appeared to have some kind of a charge controller. The charger has a solid metallic feel and seems to be made of steel.

Top view of the 2600mAh solar charger. There is a red LED bar-graph display to display current battery charge level. Note that this bar-graph only lights up when battery is being charged and now when it is being discharged

Front panel of the 2600 mAh charger with Mini USB connector, OFF/IN/Chardge switch, voltage selector switch and LED light switch. The output voltage can be set to 4.5V, 5.5V, 6.5V and 9V

Back side of the charger state the capacity of internal battery capacity of 2600 mAh

I decided to open the charger and take a at look what is inside.

Charger opened - Li-Polymer battery, Solar Charger, Charging Circuit

Circuitry shows the battery protection S-8205A IC, LM324 op-amp for driving fixed 4-LED bar-graph battery level indicator and XR2201 DC-DC converter to output different voltages and regulate battery voltage supply

The Gateway E-4000 Series Desktop computer (6-bay)-

The E series E-4300 6-bay computer is available in tower configuration. There are 6 expansion bays. The sizes of these bays are two external 5.25-inch, two external 3.5-inch and two internal 3.5-inch bays. There are four add-in card slots at the rear of the case The casing is very spacious and houses Intel D915 motherboard with LGA775 socket for latest Pentium 4 processors and DDR-2 compatibility.

The system has two PCI Express Slots (1x,16x) for installing graphics cards and other peripherals. Firewire port is given at the front to connect media devices like cameras etc.

In above picture you can see an open casing of a E-4300 6-bay computer.

Description of labeled parts is given below:

Item	Description
A	Power supply
B	5.25-inch drive bays
C	Chassis fan
D	3.5-inch drive bays
E	3.5-inch hard drive bays
F	Add-in card slots
G	Motherboard

The Gateway E-4000 Series Desktop computer (4-bay)-

The Gateway E-Series computers have been around for a while now. The systems are available in both desktop and tower configuration.

The particular Gateway system we are about to review is a E-4300 series small form factor 4-bay computer. The term "4-bay" refers to the fact that a total number of four expansion sites are available for installing storage devices like floppy drive, CD-ROM Drive, hard disk drive etc. The sizes of these bays are one external 5.25-inch, one external 3.5-inch, one external 3.5-inch slimline and one internal 3.5-inch bay.

One of the unique advantage of this casing is that it can be use as a desktop or mini-tower configuration. It has a rotatable feet which comes out when you turn it 90 degrees. Hence the casing can stand stably.

The motherboard model is D865GLV Intel manufactured. It carries a Pentium 4 Socket 478. Which makes it possible to install any processor in the 1.7-3.00 GHz Range (Faster and newer Pentium 4 processors use LGA 775 package). This particular system uses 2.8GHz processor with 800MHz Front Size Bus (FSB). 4-slots are available for 400 MHz DDR RAM thus there is plenty of room for memory expansion. A PCI slot and 8x AGP port is also available for gaming enthusiasts. This desktop PC is still available for sale on ebay and other sites.