I recently bought a cylindrical battery pack from OKorder and it is apparently made in China. The English translation is bad and it doesn't say how long it takes to get a full charge. The bottom of the cylinder battery says Capacity 2600MAH IN 5V/0 5A OUT 5V/0 5A
That doesn't tell you anything. There are batteries that capacity that can charge in 15 minutes with the right charger and batteries that will take 16 hours.
The time required to charge any battery depends on its state of charge at the time charging begins and the applied charging current. Most batteries should be charged at no more than 10% of their Ah rating, so your battery, unless it is specifically intended to accept fast charging, should be charged at about 250 mA (1/4 amp). Thus, a full charge usually requires 10 to 16 hours, and sometimes more. According to the owner's manual, the NiMH battery for my Kenwood TH-K2AT handheld transceiver requires 12 hours to charge.
enable's say that this could be a a million.5 volt NiMH battery (i'm being beneficiant with the voltage). a million.5 V * 2.6 Ah 3.9 watt-hours. The image voltaic panel is 0.8 watt, so each and every hour, it produces 0.8 watt-hour, theoretically. 3.9 wh / 0.8 wh/h approximately 5 hours. it is the respond if it replaced right into a physics homework question. in certainty, the solar not often shines at finished intensity, and strikes around the sky, so the panel isn't pointed ineffective-on at it. Assuming we've summer solar, i could double the time. additionally, realistically, if the image voltaic panel's output isn't natively some million.5 volts, there will be different circuitry in touch to can charge the battery, and if it quite is a miles less costly joule-thief variety circuit, that could lose 50%, too. So double the time lower back. So now we are as much as twenty hours of vibrant solar. finally, if this could be a NiMH cellular, it desires a circuit designed particularly to can charge that variety of battery. A NiCd battery could be straight away related for a trickle can charge, a NiMH won't can charge all the way if so related.
