General > General Technical Chat
Friends and your projects
HowdyPartner:
--- Quote from: AndyC_772 on October 06, 2021, 06:33:53 am ---Hang on a minute... this Chinese "protection" device draws 80mA from the battery, all the time? And it's meant to stop the battery going flat?
--- End quote ---
I've had a faulty dashcam drawing 80mA at all times. The car wouldn't start after sitting in the garage for a week with that standby consumption.
AaronLee:
--- Quote from: HowdyPartner on October 06, 2021, 08:09:42 am ---
--- Quote from: AndyC_772 on October 06, 2021, 06:33:53 am ---Hang on a minute... this Chinese "protection" device draws 80mA from the battery, all the time? And it's meant to stop the battery going flat?
--- End quote ---
I've had a faulty dashcam drawing 80mA at all times. The car wouldn't start after sitting in the garage for a week with that standby consumption.
--- End quote ---
Faulty meaning a bad component, or faulty by design? I have experience in dealing with engineers designing automotive gear, and most of them realize the importance of minimizing current consumption, but it takes a LOT of additional work to do it right, and a lot of them are willing to take shortcuts to meet deadlines. If I was buying something (not just automotive stuff) where current consumption was important, I'd check the device compared to the spec first thing, and return it if it didn't meet spec. I'm willing to bet there's a lot more stuff out there that doesn't meet spec than most people realize.
jonovid:
IMO if you do not have a spare unit or gadget then and there for an on the spot sale then the answer is No!
as saying Yes will cost you time and frustration. people do change his or her minds then google it and find a new toy online.
if your in business to sell gadgets of this type then your prepared for on the spot sales wen needed. with a return policy for unwanted merchandise from impulse buying.
a true Friend can take a NO for an answer
AndyC_772:
They're probably compelled to take short cuts in order to meet cost targets.
A lot of my jobs are automotive accessories; I do consulting work for a number of businesses who make and sell products that have a permanent conection directly to a vehicle supply.
Because of the quantity and/or price point, they're all highly cost sensitive. Components that don't directly impact the spec sheet or user experience (eg. protection or supply switching) are the first to be questioned. Engineers don't always have the confidence to stand up and insist that they really are essential, even though the customer will complain the moment the device drains their battery or blows up a month after they've installed it otherwise.
Wilksey:
Yes, 80mA, the one I had to hand was 16mA, I have about 50 of these relays over from another project and just decided to use it, I use my car every day so I am not worried about such a small draw, it has a massive battery and while it is only rated at 95Ah the voltage seems stable, I am going away for a week soon so I will see what it does to the battery whilst I am away.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version