How long does it take with the crank to fully charge the battery from zero?
508228
It is not meant to fully charge the battery from the hand crank. It's purpose is to provide enough power for short-term light, or by its export port for making important phone calls, etc. If the "1 minute of cranking gives about 10 minutes of light on low for 1 side light" is accurate, then the 48 hours of run time on low would require: 48 hrs x 60 min/hr = 2,880 minutes of light ÷ 10 minutes per minute of cranking = 288 minutes or 4.8 hours of cranking at 120 RPM. If the "about ten minutes of light" is actually 9 minutes, you would have to crank for 5.3 hours. The Goal Zero Nomad 7 solar panel will charge it in 7 hours. It seems the better choice. Their new Mini-Lantern is also an AWESOME product! It is not meant to fully charge the battery from the hand crank. It's purpose is to provide enough power for short-term light, or by its export port for making important phone calls, etc. If the "1 minute of cranking gives about 10 minutes of light on low for 1 side light" is accurate, then the 48 hours of run time on low would require: 48 hrs x 60 min/hr = 2,880 minutes of light ÷ 10 minutes per minute of cranking = 288 minutes or 4.8 hours of cranking at 120 RPM. If the "about ten minutes of light" is actually 9 minutes, you would have to crank for 5.3 hours. The Goal... » Read More It is not meant to fully charge the battery from the hand crank. It's purpose is to provide enough power for short-term light, or by its export port for making important phone calls, etc. If the "1 minute of cranking gives about 10 minutes of light on low for 1 side light" is accurate, then the 48 hours of run time on low would require: 48 hrs x 60 min/hr = 2,880 minutes of light ÷ 10 minutes per minute of cranking = 288 minutes or 4.8 hours of cranking at 120 RPM. If the "about ten minutes of light" is actually 9 minutes, you would have to crank for 5.3 hours. The Goal Zero Nomad 7 solar panel will charge it in 7 hours. It seems the better choice. Their new Mini-Lantern is also an AWESOME product! « Show Less
508229
Sorry I haven't put the cranking recharge to the test yet. I'll find out when there isn't any power available.
508230
It is not meant to fully charge the battery from the hand crank. It's purpose is to provide enough power for short-term light, or by its export port for making important phone calls, etc. If I remember, it would take 24 hours cranking at 120 rpm to deliver a full charge on the 4400 mAh battery. The Goal Zero Nomad 7 solar panel will charge it in 7 hours.
1199464
Hello. I never actually timed it, but it seems like it only takes a few hours tops. It holds the charge good as we'll hope this helps a little.
963799
2 minutes cranking will give you about an hours play (not at full volume though). The manual says each 90 second crank will give you 30 - 40 minutes play.
567985
The light starts off red; turns amber at some point in the cycle; then turns green when the batteries are fully charged.I've never timed it accurately, but I would guess it takes about 4-6 hours - since I don't know the beginning state of charge, take that with a grain of salt.
1503572
For motor-bike batteries(150c.c. bike), it can do the job in less than 50 minutes. For Cars batteries, it's vary with the volume/capacity of the batteries. For my own car(Suzuki Swift), it gets the job done in 5 hours. I think it is fast enough for me.
1428953
From 0 -100% on the trickle charge it would take about 35 hours. On the 12 amp setting probably 16 hours.
937684
The light will blink green until the battery is fully charged, then it will glow solid green to indicate it is ready to use. It typically takes 1 - 2 hours to charge completely.
1353832
WE think about 30 mins form flat battery to fully charged. I will measure it next time but we are away for a week.NIck Geary
1841300
When I first received mine, it took about 20 minutes to an hour to get a full charge. By the time I finally just threw it out (less than a year later) I would leave it plugged in all day and get about 30 seconds of use.
1374183
ON a full charge with a new battery, between 5 and 6 minutes. Takes about 20 minutes to recharge.
1926914
I've never timed it, but it seems to be only a couple of hours to go from dead to full charge. Keep in mind this device can be used while charging which will likely slow the charge down.
2150963
There is a light on the charger that changes color when the battery is fully charged. Usually, if the battery was totally discharged it will take one to two hours to fully charge.
1562097
The crank action feels fairly rugged with the usual sounds while cranking. Cranking at 120 RPM yields a charging current of approximately 250mA, so if you were to actually try doing a full charge, it'd take at least two and a half hours of continuous cranking. That's why this is not something someone would do on a regular basis; it should be considered as a method for emergencies only, or if you just want to play with it for a while, or give it a quick top off charge. Charging from USB gives it about 150mA charging current, so it actually would take longer, but sitting four hours idly watching the red light turn green is a lot easier than cranking furiously for 2-1/2 hrs... ;) The crank action feels fairly rugged with the usual sounds while cranking. Cranking at 120 RPM yields a charging current of approximately 250mA, so if you were to actually try doing a full charge, it'd take at least two and a half hours of continuous cranking. That's why this is not something someone would do on a regular basis; it should be considered as a method for emergencies only, or if you just want to play with it for a while, or give it a quick top off charge. Charging from USB gives it about 150mA charging current, so it actually would take longer, but sitting four hours idly... » Read More The crank action feels fairly rugged with the usual sounds while cranking. Cranking at 120 RPM yields a charging current of approximately 250mA, so if you were to actually try doing a full charge, it'd take at least two and a half hours of continuous cranking. That's why this is not something someone would do on a regular basis; it should be considered as a method for emergencies only, or if you just want to play with it for a while, or give it a quick top off charge. Charging from USB gives it about 150mA charging current, so it actually would take longer, but sitting four hours idly watching the red light turn green is a lot easier than cranking furiously for 2-1/2 hrs... ;) « Show Less
2247310
I didn't charge mine before use. Upon receiving my battery it had about 60% charge. To fully charge the battery takes approximately 2 hrs.
2007200
Although I never timmed the charging of the Battery, I do know it doen't take all night. I would guess about 5 or 6 hours
927767
I'd say it fully charges within 30 minutes. I haven't timed it though. When I use it it is only on for about 10 minutes and I had to recharge after about 4-5 days. The button to turn it on and off can be very difficult. Sometimes it is easy and comes right on and other times I have to keep trying.
641418
My best calculation says about one hour on a fully charged 160 AH battery. That would reduce the battery to half charge, and you don't want to go lower.