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Randall
August 20, 2025
Great product!
Sylvia Briggs
August 5, 2025
Doesn’t hold a charge for very long.
johnny5c
July 20, 2025
Seems to be decent cells, they charge right up to the expected voltage and runtime seems good with the flashlight they're in.
Red Ryder
June 27, 2025
Matched battery from my old LED flashlight. Fit perfectly and came partially charged. Now I have a spare too. What's not to like!!
Fatos Adami
June 18, 2025
I bought two of those with a holder (from a different seller) to power a small multiband radio that I carry with me while I am traveling. It needs a 7.5V power supply or five AA batteries (5 x 1.5 = 7.5V), which is inconvenient since they are normally sold in multiples of 4.I thought two of those 18650 batteries (2 x 3.7V = 7.4V) in a battery holder with the appropriate plug that can be attached to the power supply jack can be used as a backup power supply.Amazon lists those as 4000mA-hour batteries, whereas the fine print on the body of these batteries says 5000mA-hour. My radio consumes about 50mA at moderate volume, which would give me a battery life of 80 – 100 hours before they need recharging.When these 18650 batteries arrived, I put them in a charger I have, and in a couple of hours the green light indicated that they were fully charged. I measured the voltage in each of them and they were charged to 4.0V x 2 = 8.0V. (a little high for my radio, but not a big deal).After listening for about 10 – 15 hours (not even that) using the newly acquired and fully charged 18650 batteries, the sound started to get distorted, which showed that the batteries were close to their end of life. I removed the plug, and the sound came back to normal due to the AA internal batteries in the radio.I measured the voltage, and it was 2.9V x 2 = 5.8V, which means they were fully discharged. I was very disappointed since I was expecting at least 40 hours of operation assuming that their capacity would be at least 2000 mA-hours, regardless the 4000 or 5000 mA-hour as advertised.The next day I did a controlled charging of the 18650 batteries giving them a constant current of 100mA until the voltage reached 4.2V X 2 = 8.4V, which is the maximum voltage for this kind of lithium-ion batteries. I left the voltage unchanged afterwards and the current died down to negligible values showing full charge. It took all this about 8 hours to complete.Now my disappointment grew even bigger, this means that their charging capacity is 8 x 100 = 800mA -hour. The discharging capacity cannot be more than 85% of this, which is roughly 650mA hour. Really? Batteries advertised as 4000 or 5000mA-hour are in reality 650mA-hour ones.This item is completely misrepresented and a fraud to be sold anywhere, including Amazon.
Curly
May 24, 2025
Quick shipper ðŸ‘
Chuckles
May 12, 2025
Exactly what I needed!
denis monroy
April 16, 2025
I purchased this but now it won’t keep a charge and it doesn’t last as long it drains much faster each time
Miguel
April 2, 2025
Buena intensidad
Son cómodos, suenan bien, son caros
March 16, 2025
El producto es pésimo, la baterias no duran más de 40 minutos, casi quema mi casa y el cargador es de lo más corriente posible.
MarÃa O.
March 15, 2025
Las compré para una lámpara y solo duro 5 minutos la carga
David RamÃrez
January 23, 2025
El producto solo acepto una carga razonable y posterior ya solo duran las pilas cargadas cuando mucho una hora y ya no retienenYa se fueron a la basura
Abraham
December 20, 2024
Compre las pilas para un timbre inalambrico y no funcionan las pilas, no son recargables. Son de un solo uso
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