2-in-1 Hand Cranked Dynamo Survival 2-Mode Flashlight + Phone Charger
Price: $11.57
SKU: 3851
Typically ships in 4 to 7 days* (7 to 10 during new year season)
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- Recharged by hand crank handle
- 3 bright white LED emitters
- 2 mode available: 1 LED light up; 3 LED light up
- Built-in 3.6V 120mAh rechargeable battery
- Crank 1 minutes can be used for 30 minutes
- Crank 2~3 minutes can be used for charging your cellphone for 8 minutes
- Recharges cell phones, comes with 4 cell phone charging connectors (see pictures for compatibility with your phones)
Dimensions: 5.2 in x 1.85 in x 1.54 in
Weight: 6.17 oz
| Quantity | 3+ units | 5+ units | 10+ units |
| Price /Unit | $10.19 | $10.09 | $9.99 |
Reviews
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Good survival flashlight, but bad for usual usage |
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| Posted by NiTr0 on 05-15-2010 | |
| Involvement: Expert (understands the inner workings) - Ownership: 1 day to 1 week | |
| Price: |  |
| Ease of Use: | |
| Build Quality: |  |
| Usefulness: |  |
| Overall Rating: | |
| Pros:Good plastic, bright LEDs, 120 mAh lithium accumulator with very simple charging circuit (voltage¤t limiter) inside; has simple output voltage limiter (one zener diode); phone adapters are compatible with adapters from same devices (each adapter have 4mm male jack for connecting to charger device); has good silicon grease on the mechanism inside; good lays in hand. | |
| Cons:Not very useful for phone charging (it's hard to crank for 10-15 minutes for enough charge) - it good just only for one emergency call; manual inside on Chinese. | |
| Other Thoughts:DTW description is short and can be meaned ambiguous - so I expected that crank actually charges only internal cell, and phone will be charged from accumulated energy.IMHO it'll be good if device has battery with higher capacity inside, that will be quickly charged by cranking, and slowly discharged via step-up converter to the phone - because there are high mechanical losses in the dynamo, and it'll be easier to chank high load, but less time, than low load, but for long time. | |
| Bottomline:Good flashlight, but only for for long travel - battery-powered flashlight will be more useful in case when you can easily get fresh batteries, and phone charger also isn't very useful for regular charging. | |
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