Unit appears well made. I have limited experience in using / testing the unit. I would like additional technical specification and guidance for the power requirements for charging. I was advised by tech support that a 1200W inverter would be the correct match for charging the unit in my camper van. Initial testing has the inverter periodically alarming for over current. Should a larger capacity inverter be used (1500W or greater?).

I still haven't had a chance to use it on the field but as soon as I received it I put it to charge. When from 30% to 100% in about 1 hour so I decided to test it. Connect my 50" led tv my lamp and my very large blower fan and when I turned it on it just made my day. Very well made. Can wait to connect it with the 120 watt solar panel. Keep up the work.. stevenson...

Wasn't happy with the shipping it arrived a week late. The product is excellent though. Charged it up in an hr and a half and went camping with it. It ran my Cpap at night and charged up phones, cpap sanitiser,and recharged on our RV's 110 watt solar panel in about three hours. Great unit.

This baby is the ultimate portable Beast! Pretty easy to put into the back of your car or even onto a bike basket to take to the beach to power a DJ party. I also like that it charges quite fast, and you can also use it while it's charging. I have not encountered any problems with the one I've gotten recently.

I own 2 Delta 1300s purchased Sept & Nov 2020. Giving it/them 4 stars, I'm fairly impressed with the relative small size, quality of (visible) materials & manufacturing (craftsmanship), display functionality and general functionality and performance. What could be better: 1) As I primarily use these outdoors (often on beach- on sand, close to water), I wish ALL electrical outlets had caps/covers (like the 12v "car" outlet, and like the electrical inputs) to protect from git and oxidation. (To keep my units grit and moisture-free when in use, I place them in sealable plastic storage bins prepared with drilled holes for cables and ventilation.) 2) Once unit is fully charged, I wish display would EXPLICITLY indicate full charge instead of "hanging" on "01" minute remaining (better to indicate "00," (no time remaining to charge) or "FULL." 3) Master/Slave mode: I wish master display would indicate the COMBINED TOTAL power remaining & time remaining of the SYSTEM (of the linked units). 4) Master/Slave mode: I wish the "swith-over" time from master to slave was faster. (Most of my audio/PA equipment is not effected by the switch; one unit turns off for a audible second or so.) 5) Manual could be better; it seems it's written by folks for whom English is not their first language; so, it's not always clear. Also, manual could be more explicit, eg.: While manual explains HOW to hook up units in master/slave mode, it does not inform user of the operational BEHAVIOR of units once operating in this mode; it would be nice to know -- in advance of use -- how each display will function, and how the system handles "paying out" power. 6) From my perspective, as a consumer, it's a shame the internal batteries are not replaceable once spent- It's not "green & clean," in fact, it's wasteful to dispose of an otherwise functional unit simply because the internal batteries are spent; surely this is not cost-effective to the consumer. All said, I'm fairly pleased with my 2 Delta 1300s this far.

Real good power station, it charges soooo fast from the an electric AC regular home oulet, it can power all my appliances at once. I will connect my 2 x 200w solar panels and update the review. But so far so good. Not too noisy, very light and small.... love it!

Great Item! Perfect for just about all power needs. Great for back up for recharging special needs medical equipment CPAP, Feed pumps, etc. Great to keep Routers and Modems up and running, If you got power you should have internet. Power tools, microwaves, the list is endless. Use in conjunction to complement small gas generators for recharging.

I love it! My power went out in my apartment and the the Delta kept my food nice and cold in the fridge for 9hours and still was able to watch and charge up my laptop and cell phones. I charge it up every chance I get. Thank you to all those big brains who invented the delta!

great price for watts size.

[This review was collected as part of a promotion.] Packed good and was on time