Sunder
10 MW
Alright, this is nothing that impressive... Yet. But this is my first run of a USB-PD charger for my eBike:
The tiny device hot glued to the wall is what negotiates 20v at the highest available current the charger is willing to give. The big device below is... Actually, it's a 60A DC to DC converter, and way bigger than I needed. I ordered a tiny 3A one from eBay about 4 weeks ago, but it seems like the package was lost. I think once I get the right size boost controller, the whole package can be nothing more than a "bump in the wire", not much larger than your typical ferrite core. In fact, once it's here, I'm planning on reprinting my battery box about 1.5cm larger, and just make it part of the battery.
The USB-PD standard allows for up to 100W per channel, though there are chargers up to 136w, giving enough overhead to charge a phone, or run a laptop (without charging it). Unfortunately, all of these chargers are US ones. Australia has a limit of 65w, it seems, but all of the 100W ones seem to have been released from Nov. 2019 onwards, so I expect they are doing different countries in batches, and within 3-6 months, the big watters will be available in Australia as well.
Here's what I hope for in the long run though: I always carry a USB-PD charger with me. It's my one power source for almost everything. At 65w, it takes me a little over 2 hours to recharge my ride in to work, or 4 hours to charge the battery from dead flat. However, I'm hoping to get a USB QC3.0 negotiator in there as well. That means whether it's a dumb 5v, 500ma power from a laptop, an Apple charger at 5v, 2.4a, an old generation QC2.0 willing to give 15w, or someone else's 100W USB-PD charger, I can still get a bit of a top up almost anywhere. USB is ubiquitous. Shopping centres and cafes have them. Back of TVs, and PCs have them. And nobody things twice when they see you "guerilla" charging from a USB port.
On the other hand, if I'm intentionally planning a long trip and need rapid charge ups, I can still carry my 15A charger, and be 90% done in 30 mins through the main XT90s.
It's not for everyone, I know. But I really do believe in USB-PD as the "one charger to rule them all" in the future. I'm just jumping the gun on this one.
The tiny device hot glued to the wall is what negotiates 20v at the highest available current the charger is willing to give. The big device below is... Actually, it's a 60A DC to DC converter, and way bigger than I needed. I ordered a tiny 3A one from eBay about 4 weeks ago, but it seems like the package was lost. I think once I get the right size boost controller, the whole package can be nothing more than a "bump in the wire", not much larger than your typical ferrite core. In fact, once it's here, I'm planning on reprinting my battery box about 1.5cm larger, and just make it part of the battery.
The USB-PD standard allows for up to 100W per channel, though there are chargers up to 136w, giving enough overhead to charge a phone, or run a laptop (without charging it). Unfortunately, all of these chargers are US ones. Australia has a limit of 65w, it seems, but all of the 100W ones seem to have been released from Nov. 2019 onwards, so I expect they are doing different countries in batches, and within 3-6 months, the big watters will be available in Australia as well.
Here's what I hope for in the long run though: I always carry a USB-PD charger with me. It's my one power source for almost everything. At 65w, it takes me a little over 2 hours to recharge my ride in to work, or 4 hours to charge the battery from dead flat. However, I'm hoping to get a USB QC3.0 negotiator in there as well. That means whether it's a dumb 5v, 500ma power from a laptop, an Apple charger at 5v, 2.4a, an old generation QC2.0 willing to give 15w, or someone else's 100W USB-PD charger, I can still get a bit of a top up almost anywhere. USB is ubiquitous. Shopping centres and cafes have them. Back of TVs, and PCs have them. And nobody things twice when they see you "guerilla" charging from a USB port.
On the other hand, if I'm intentionally planning a long trip and need rapid charge ups, I can still carry my 15A charger, and be 90% done in 30 mins through the main XT90s.
It's not for everyone, I know. But I really do believe in USB-PD as the "one charger to rule them all" in the future. I'm just jumping the gun on this one.