Picked up the latest version of the Tomo V8-4, along with the latest 3-cell version, but have some funny observations:
At first, I thought they were both broken. Of course, I threw the included little usb jumpers in the trash, and used some nice Anker charge cables. That lead to no more than 0.05A charge current! Say what?
Ok, pull the oem cables from the trash, and now the unit will charge my smaller devices at about 1.5A max on the 2A port. Small tablets, average android smartphone - all came originally with only 1A ac chargers anyway. I forgot where I saw it, but somewhere in the Tomo material online, they go on to state that the included cables are "not resistance decoded", whatever that means.
Ah, so a trip to the past. From what I can tell, the ports are influenced by the apple-like method of using/looking for resistance on the data lines, rather than a total short to signify a charge-only cable? I'm not a cable expert.
Get this - when I used my Abovetek inline usb volt and ammeter, it does not always agree with the display:
When using a beefy short Anker charge-only cable, the inline meter shows about 1.4A, but the Tomo display only shows 0.05A flowing! What?
Switch to the oem Tomo cables, and now the inline meter agrees with the display, at about 1.4A each - about max that I've observed with my stuff.
I've gotten spoiled with all the "smart port" usb outputs from Anker battery packs and the like, but the Tomo output seems fussy about the specific cabling, yielding wildly different results depending.
I'm having fun with the Tomo's but lack of a smart-port to automatically figure out the proper cabling was driving me nutty.