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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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  • 13/11/2019

    This is a great product! Let's start with the packaging. You don't need scissors or anything, you just slide out the plastic cover from the paper. The battery is lighter than the regular 9 V batteries. I assume that this is mainly because of the Li-po technology. There is a button on the side of the battery which indicates the charge when it is pressed. The charging can be done with any micro USB connectors. Please be aware that the product is ONLY the battery. You must have a cable, but since most of the phones are using this type of cable, it is not a problem. The output voltage is around 9.24 V without any load. I recommend this product!

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  • 16/01/2020

    I was looking for a Krona 9B battery without a charger. With USB just what you need.. The battery came charged at 2/3. Delivery SDEC. The track was n't tracked. The parcel reached Crimea in 30 days, 22 of them on the way. I recommend the salesman to the purchases.

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  • David

    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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  • 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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  • 29/06/2017

    У меня есть много устройств, которым требуется такая батарея. Но удобнее всего её использовать с конструктором Arduino. Для всех рекомендую приобрести себе пару-тройку таких аккумуляторов, которые заряжаются от обычной micro-USB зарядки и служат альтернативой батарейкам "Крона". Поверьте мне, вы не пожалеете.

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  • 03/12/2017

    The product seems to work as expected, at least for now. Tested it in an IR "gun thermometer", works fine. LED charge indicators also seem to work fine. Packaging information in Chinese only.

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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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  • 29/01/2018

    cómo es recalcado antes la batería tiene buen aspecto el tamaño y el grosor es justo el mismo con la batería de 9 voltios el techo es muchísimo menor y espero que la duración también sea superior después de 3 meses por fin llegó.

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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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