Regarding how people specifically hire me, I've been lucky enough to never really need to search for work; it just finds me. Either through HN, or from people I've worked for before.
By the way, my email's in my profile; anyone in this thread feel free to contact me. You should especially contact me if you're involved in any project that uses batteries, I always love to hear what people are making.
Another example is when a company needed a 10kW output for just a few seconds. I was able to reduce their already-optimized battery pack (the largest weight part of the system) to one twentieth of its original weight.
Given a random company that hired me, I could probably accomplish one or two of the below:
- Increase battery capacity by 20-120% (average maybe 50% improvement or 1.5x original, for example 900mAh -> 1400mAh)
- Increase battery max output power by up to 70x (for example output power 15W -> output power 1000W)
- Decrease battery weight by 20-100% (average maybe 40% improvement or 1.4x original, example 500g -> 350g)
- Increase cycle lifetimes by 10x (example 300 cycles to 3000 cycles)
- Increase or decrease operating voltage of battery
- Make a lithium-ion battery extremely safe (not dangerous after extreme drops, heat, cold, short circuits or punctures)
- Change battery form factor into something much more convenient
That list is of course assuming that they're already using semi-decent lithium-ion batteries. If they're not using li-ion or using bad li-ions, the improvements are (usually) much more drastic than above.
If anyone reading this is working on any project requiring batteries, shoot me an email (it's in my profile.) I can reduce cost/weight/charge time and increase power/capacity/durability (whatever you choose) - and the worst case is that I tell you your batteries are already optimal.