OnePlus recently announced a 10,000mah battery bank that does not use 18650s and is priced reasonably at $15 with dual 2A 5V USB output and a single 2A 5V USB input. I’ll probably pick one up when it drops as it seems like a nice slim design and I doubt OnePlus would tarnish its reputation by inflating the numbers. Comes in black and white with proper CE certification.
Material Sandstone Black or Silk White Battery type LiPo Nominal capacity 10,000 mAh Input DC 5V/2A Output 2 × 5V/2A Charging time Approx. 5.5h Dimensions 142.8 × 72.6 × 16.2 mm Weight 220g Safety features Electrostatic, short-circuit, overcharging, overheating protection
Capacity of 10.000 mAh at what voltage? I recently read the fine print on several power banks and discovered the listed capacity is battery capacity at 3.6 or 3.7V rather than output capacity at 5V. Thus output capacity at 5V is 75% of listed capacity or in the real world even less. Typically, as in the listing you link to, voltage the capacity is listed at is not specified. Incomplete specifications and to me false advertising. I want to know USEFUL OUTPUT CAPACITY AT 5V.
I agree that is how they measure capacity. I just disagree with such a method as customers should be more interested in available 5V power out that is useable for charging another device, the purpose of the battery power bank. As is there is no indication of power bank efficiency which can vary considerably. I have seen questions posted on Amazon clearly indicating that customers are presuming that the mAh rating is at 5V due to this being both the voltage in and the voltage out. I do not give a rat’s a that internally the power is stored in 3.7 nominal voltage batteries. In some units available it is even in four AA NiMh batteries in series.
I don’t think an invite is needed for the power banks, and I think OnePlus is also selling their phones without the need of invites for their one-year anniversary until stocks last.
I still am slightly skeptical about the capacity. 10,000mAh sounds slightly too large especially with the small form factor.
Yeah, but not all USB charged devices use switch-mode chargers, in those cases, the power that went into stepping up the voltage will just be wasted.
For what it is worth, Xiaomi is the only company I’ve seen that gives capacity in terms of what is actually delivered at USB voltage, and even then, it is secondary to the cell capacity.
I agree, Richwouldn’t, if only one number is given it should be the capacity delivered at 5v, but that ship sailed long ago.
Nice looking portable power unit…if they could do a group buy…I’d be in for one…maybe two for sure!
Seriously…that is one sexy looking unit…now if HKJ could review it…and it was a good unit (per his testing)…that would be icing on the cake
Truthfully it looks like the stacked Li Po batteries are the same width as side by side 18650’s, who’s to say a modder later on couldn’t come in and lay 5-6 18650’s flat, tab em up and connect em in the system in parallel Where there is a will, there is a soldering iron
