Hacker News new | ask | show | jobs
by dotBen 4476 days ago
Mentioned in passing in child comments below, but worth highlighting - the HyperJuice Battery range of products (eg http://amzn.to/1mqK9ap) already does this, at a similar price point, and is available for purchase today.

In fact they're already onto the second generation of the product, with minor bugs and issues with the first gen already ironed out. I get this GBattery has a new "BatteryOS" management feature but right now that's vaporware and unproven, and unavailable for purchase - thus I don't really understand the excitement vs what you could already buy today.
1 comments
mcmillion 4476 days ago
We bought a HyperJuice 2 for use on trips. It's terrible. It'll charge a 15" rMBP about 10-15% before it's completely dead.
link
post_break 4476 days ago
It's not made to charge the laptops. It's made to keep them running. The rmbp will suck any battery dry trying to charge and run at the same time. Keep the rmbp at 100% and plug in the battery and let me know how long it lasts.
link
dotBen 4476 days ago
It's not designed to charge MacBook Pros, just Airs due to the wattage required. I don't believe that's any difference for the GBattery either.
link