Anyone who is familiar with smartphones in practice knows about the existence of a power bank (or a power bank, to whom it is more convenient), it is also a portable battery. They are riveted by everyone and sundry, the benefit is the simplest device: a couple of lithium "cans" and a small converter board. Capacity varies from hundreds of milliampere-hours to tens of ampere-hours, dimensions and appearance are also easy to choose for your own tastes. But with practicality there are nuances. What should I do if there is no USB charging port nearby? In a campaign, for example. You can take other sources of electricity, such as mechanical generators and solar panels, or you can buy batteries and a portable charge-discharge device GP Charge AnyWay.
- Model: X411;
- Batteries: 4x AA / AAA;
- Connectors: microUSB, USB type A;
- Batteries: 4 GP ReCyko + 2600 mAh;
- Dimensions: 80x64x25 mm;
- Price: 2,000 rubles.
The device is sold in a box of thin cardboard.
Included is a USB charging cable and four batteries.
Externally, Charge AnyWay resembles the good old charger for a nickel-cadmium or nickel-metal hydride battery, especially when the battery packs are installed in it.
At first glance, a boring thing: the "ancient" batteries, seriously losing in terms of capacity / weight with lithium. Give 2000 rubles for a simple USB-charger - why? There is an answer. Firstly, Charge AnyWay can charge other devices through the USB connector on the end.
Secondly, the use of AA and AAA batteries expands the capabilities of the device: batteries of appropriate types can be used as a power source. And you can get them even in a rural household, which can not be said about lithium batteries of the 18650 or 26650 format. Yes, there are lithium batteries with the ability to quickly charge, but they cost decent money and require appropriate chargers.
From this moment you can proceed to the test tests, because it is precisely they that can clarify many very important nuances.
Test resultsThe first test is for current output: can the converter built into Charge AnyWay give the declared 1 A via USB? Yes, maybe for 100 minutes with fully charged packaged batteries. But there are a few points. I suggest looking at two waveforms illustrating the RF ripple at the output at a current of 0.5 A and 1 A (left and right, respectively).
Ripples with a range of 0.1 V are acceptable, and 0.23 V is already a bit too much. In practice, this can manifest itself in problems with charging with an increased current (more than 0.5 A, based on USB 2.0 specifications). However, gadgets such as headlamps and other small banks, which are unpretentious in terms of “cleanliness,” should work fine.
The second test is on the capacity of the batteries themselves. Charge AnyWay did not participate in it, IMAX B6 was engaged in counting the issued milliamps. Received 2500-2600 mAh with a discharge current of 0.5 - 2 A. A relatively small drop in capacity with increasing current, but it is difficult to call them high-current: the drawdown of the capacity is noticeable even with a discharge current of less than 1C. And it would be worth considering this point, because the nature of the consumption of Charge AnyWay is pulsed: up to 1.65 A at a load current of 1 A and up to 0.89 A at a load current of 0.5 A. Taking into account the above measurements and the declared battery capacity, you can to think that the efficiency of the converter is about 65%. But these are not entirely correct calculations: it is worth considering the actual battery capacity with pulsed consumption with peaks of 1.65 A.
In this situation, it is not worth taking cheap batteries designed for a consumption current of one or two hundred milliamps. They will last no more than half an hour at a load current of 0.5 A. It is better to immediately buy batteries designed for high-current consumers (radio-controlled models, for example).
Charges Charge AnyWay complete batteries in 3-4 hours, the current consumption from USB is 0.85 A. There is practically no heating in different operating modes, protection against short-circuit is implemented. Battery status indicators are small LED indicators. Flashing green - charging, continuous light - the battery is full, flashing red - overload.
GP Charge AnyWay is an interesting device, simple and practical. It can be recommended to those who often go outdoors with a backpack behind. It may come in handy in the city if finding AA batteries is easier and cheaper than sticking to a stationary power source for an hour or two. It is advisable not to exceed the consumer's power of 2.5 watts, so that the batteries do not lose wasted capacity. The price is quite adequate, given the complete batteries (from 800 to 1200 rubles per set).
To eliminate the only drawback - low load capacity - it is enough to increase the capacity to 8-10 batteries, and slightly rework the converter circuit. An increase in the number of batteries will also allow you to “dry” the batteries, using them 100% (which is not done by any serial bank designed for batteries).pros
- Using AA / AAA elements;
- Compact size;
- Stable output voltage.
- High current consumption from rechargeable batteries / batteries.