Omnicharge Omni 20 Power Station $99 (2018)
Omnicharge Omni 20 Power Station [ Bundle with accessories] $124.50 (2018)
If you like to travel, and carry a lot of electronic gear for photography, phones or laptops, etc. re-charging in the field can be a real pain.
This unit is ideal for my needs:
TSA/FAA Legal (< 100wh battery pack)
International charging adapter
Flexible (Solar/MPPT) input 4.5-36v DC
Fast recharging (45w/2 hours)
At least 70w output (rated 100w)
HVDC (150v) output reduces charging loss when using 110v power
110V modified sine wave power
Compact and travel friendly
Quick Charge 3.0 technology
Programmable 1-24v DC charge @ 3.5a
This unit lets me use my 50W folding solar cell, or a 12v car cigarette adapter, or the AC power in the hotel room/RV to quickly recharge the unit and any extra packs I am carrying, all at the same time.
The only limit is the 45w maximum charge rate, which works out to about 10,000ma per hour into a typical power bank. It can pull about 32w on 12v, so unless you have serious car battery capacity, be sure to unplug it if you are not running the car's engine! But it works great while you're on the way to your next stop.
In practice, I use the Omni 20 with two 20,000mah auxiliary power banks, giving me more than 200wh total capacity. When I return to camp in the evening, I hook up the Omni 20 with one auxiliary bank on the input (doubles charge capacity), and my laptop charger into the HVDC (AC) outlet. Any phones or tablets are plugged directly into the other auxiliary bank.
During the day, I connect the Omni 20 input directly into the solar cells/local power, and use the USB interfaces to "top off" the two power banks. Since USB can only produce about 15w each, a deeply discharged pack can take all day to recharge. Alternately, if your power pack is "Power Delivery" compatible, you could use a USB-C PD AC charger on the Omni 20's HVDC outlet to pump up to 60 watts into one, though it would be safer to limit it to 30w, since you can only put a maximum of 45w back into the system. Finally, if you don't need the pass-thru option, the input jack can be programmed to output up to 70 watts from 1-24v, at up to 3.5a DC.
Overall, if you have modest power needs and need reliable power anywhere you travel, this is an awesome, well made unit with tons of flexibility...
Internal device protection:
Automatic temperature protection
Built-in fuse design that prevents short circuiting
Automatic power-off when running current exceeds its safety limit
Automatic restart when CPU detects abnormal system parameters
A self-balancing algorithm that constantly monitors individual battery cells
Prevents overcharging by automatically disconnecting from power source
External input/output protection:
Automatic disconnection when output level does not match the device
Voltage underflow and overflow protection
Safety algorithm constantly adjusts and monitors for anything irregular
Automatic charging circuit protection when faced with irregular current
Automatic disconnection when any input source does not meet safety parameters
Product Dimensions: 5.0″ x 4.8″ x 1.1″ (12.7 x 12.2 x 2.7 cm)
Item weight: 1.4 lbs. (630 g)
In the box: Omni 20, AC Wall Charger, DC to USB Charging Cable, Travel Adapter