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  • 27/07/2017

    A past selling the 4 led version. Inside of this two serial Li-po cells provided the output voltage - of course some below 9V. Now, the 3 led version contains only one cell with boost converter. Below more detailed this. The upconverter provide continuous 9V - independent the internal battery voltage. This good news-bad news situation, because the internal step-up converter superpones some noise the output voltage. The another thing : the converter has a quiescent current : is approx 60uA (0.06mA).See the photos. That this means to the fully charged battery is storage, after 3 month the available capacity approx drop 50%. The internal battery is a 3.7V 800mAh. This real capacity, but remember : this is meaning to 3.7V! But many capacity in the output 9v ? Well connect the EV-650 pack charger/discharger (similar to Imax B6) and run to discharge test /see photos. Well in the drawn capacity of 9V is 289 mAh. Remember : the 800mAh real, but means to the internal battery voltage.

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  • 07/01/2016

    Inside exactly same as sku 986563, only with different sticker... Very good and usefull battery. There are two 420mAh cells in series, so nominal voltage is 7.4V and capacity is about 400mAh (measured it with 100mA load). NOT 800mAh at 9V as description says. When fully charged voltage is about 8.3V, when fully discharged voltage is about 6V. There is battery protection, so you can't overcharge or overdischarge batteries. When is voltage about 7V there is not much energy left and battery will discharge very quickly. Will not work with all devices, because something really needs 9V. But if your device works fine with 7-8V this battery is good replacement. You don't need spend more money for non-rechargable batteries. You don't need special charger, just regular micro USB with 5V. There are 4 LED which show you how much charged your battery is. When you charging it, battery indicator is not good, because after one hour all 4 LED are lit, so you think is charged, but not. Charging time is almost 4hours. Good battery, recommended!

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  • 07/12/2016

    These batteries are fitted with 2 LiPo Batteries with a nominal voltage of 3.7 v in series and a capacity of 420mAh. The charge seems to be limited to 8 Volts, So this is the maximum you can expect. It should be OK for most devices operating off a nominal 9 volts. The Capacity marked on the case is incorrect. at 800 mAh , Although I have not done a capacity test. If the makings on the batteries are to be believed then the capacity is no more than 420 mAh. One of the two units I purchased delivers zero Volts. By pushing on the button on the side of the case, the green leds light, indicating that the batteries are ok. I suspect that the output from the batteries to the terminal posts is switched and that there is a problem with this circuitry. The LED indicators do not appear to do a good job of indicating state of charge. The lower LED is brightly lit and the top led is only slightly lit, even after a full charge. of the working unit.

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  • 03/09/2016

    This is 2S 420mAh Lipo with integrated USB charger and charge display. It has no booster circuit like the ZNTER 9V, and therefore no HF noise. The 9V on the label are therefore very optimistic (real voltage range is 8.4..6V). Would buy again.

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  • 29/11/2016

    Nice battery. Pros: +not everyone has charger for 6F22, but everybody has USB +when charged meets all 9V devices requirements +when I used it Multimeter it shows low battery when dropped to 7.3V, so I can use almost full capacity Important. Bear in mind that single cell has 3.7 to 4.2V and 400mAh and they are in series so really it is 400mAh and 7.4-8.4V This purchase fulfills my idea of having only rechargeable power sources. Now I have: AA - NiMH + Special Rechargeable Alkaline + 14500 Li-Ion AAA - NiMH 18650 - Li-Ion 6F22 - 2S LiPo

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  • 01/06/2017

    Esta pila reacrgable de 9v es ideal para mandos de r/c drones y para alimentar los proyectos de arduino. El indicador de carga funciona correctamente,al recargar la pila parpadean los leds segun va llenandose de carga. Son 800ma reales. Se recarga mediante puerto microUsb de cualquier movil Android. Recomiendo la compra al 100%

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  • 14/10/2016

    non so se è proprio da 800mah, secondo me se arriva a 400 mah ( che non sono pochi) è già tanto, considerando anche il suo peso contenuto..... simpatica la cosa della ricarica usb.....e del led test posto sul fianco, pratica e utile!

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  • 08/09/2016

    Its of decent quality. Be advised that these are 8.4v max (at full charge) battery. The voltage will drop as soon as they are being used. How quickly voltage drop depends on the load. Some device, like a VOM meter I have reports low battery almost as soon as they were inserted. So be sure your device will operate somewhere between 7.5 to 8.4v, you'll be fine. LED charge indicator on battery is a good feature.

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  • 21/11/2019

    The 9-volt Li-Po batteries can be easily recharged. The type of rechargeable battery known as a lithium-polymer accumulator, or more rarely lithium-ion-polymer batteries (abbreviated Li-Poly or, more commonly, LiPo) is a technological development of the lithium-ion accumulator. The main feature that differentiates them is that the electrolyte in lithium salt is not contained in an organic solvent, as in the widely used lithium-ion design, but is found in a solid polymer composite, such as polyacrylonitrile. There are many advantages in this type of construction, which make it superior to the classic lithium-ion design, including the fact that the solid polymer is not flammable (unlike the organic solvent used in Li-Ion cells) and these batteries are therefore less dangerous if they are damaged.

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  • 11/03/2019

    ok.

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