Description
Goal Zero’s Flip 20 USB battery pack doubles the power of the Flip 10 for longer excursions. Designed to give multiple charges on small devices and quickly charge up from USB or sun.
200% Backup power for your phone
Small and portable, 5200mAh designed to give two full phone charges.
Solar Ready
Charge up on the go from Goal Zero’s line of portable solar panels
No Cable Needed
Flip USB for tangle-free charging from any USB port in 4 hours. Micro-USB cable included.
Pass-through Charging
Charge the Flip 20 and a phone all at once.
What can the Flip 20 Power?
This little battery pack holds up to 2 charges for phones and other small devices. USB rechargeable and Solar Ready™ for off-grid adventures.
Headlamp: 2-4 Recharges
POV Camera: 2-4 Recharges
Phone: 1-2 Recharge
Recharge from any USB port or USB solar panel.
Flip 20 Features…
- PRECHARGED BATTERY
Small and portable, 5200mAh with 1A output designed to keep your devices charged and ready. - EASY CHARGING
USB flip tip for charging in. USB output (with included micro USB cable) for charging out. - SOLAR READY™
Charge up on-the-go from Goal Zero’s line of portable solar panels. Charge in and out with pass through power. - JUST AS FASTIt takes the same amount of time to charge your device from a Goal Zero power pack as it does from the wall. Max 2.1A USB output (determined by your device)
Flip 20 Specifications…
- Battery Type: Li-ion NMC
- Battery Size: 18.7Wh (3.6V, 5200mAh)
- Cell Type: 2x 18650 by LG chem/Samsung
- Lifecycles: hundreds of cycles
- Shelf-life: Keep plugged in, or charge every 3-6 months
- Fuses: none
- Management system: Charging and low-battery protection built-in
- Ports
- USB Port (output): 5V, up to 2.1A (10W max), regulated
- USB Port (input): 5V, up to 1.5A (7.5W max)
- General
- Chainable: No
- Weight: 4.6 oz (130 g)
- Dimensions: 3.7 x 1.63 x 0.83 in (9.4 x 4.1 x 2.1 cm)
- Operating usage temp.: 32-104 F (0-40 C)
- Certs: CE, FCC, ROHS
- Warranty 12 months
Chris –
I was looking for a true passthrough solar powerbank for my solar backpack. I got a Flip 10 and Flip 20 as it claims to be passthrough-capable.
Unfortunately, the passthrough-feature on both flip 10 and 20 are very, very, very poor.
If you use it with a powerful Solar charger who delivers 2A in sunlight, it kind of works.
But even if Nothing is connected, output voltage dropts from 5,1V to 4,7V. Some phone`s don`t likle that and will charge really slow if it even starts charging.
But the sun isn`t always shining, you know. If you use smaller solar chargers like 5W, or a cloud covers the sun on a powerful one, you will see following on the output: Voltage drop to 4,3V, and charge current equals the solar charger`s current. So you have a Flip 20, half full, capable of charging at 2.1A and when charged itself will only pump 300mA into the phone when it itself gets only 300mA. So the whole point in using a passthrough powerbank, that it will stop unstable charging, isn`t done by either Flip 10 or 20. It turns itself off, resets, whatever when cloud cover is thick, unstable operation. If a cloud covers the sun the connected device will play the Charging- not charging song repeatedly. It makes more sense to charge the phone itself directly without this powerbank inbetween.
This is the same behaviour you will see on cheap non-passthrough powerbanks like EasyAcc 6400, which rightfully doesn`t even claim to be passthrough-capable.
You cannot really use this product for solar charging with this makeshift-claim-to-be-passthrough. It behaves worse than EasyAcc at double the cost.
And the folding USB plug is not a good idea. I always need adapters to connect it to solar chargers. Very impracticable.