How to contact Dave about doing a circuit for pay

[Mr 12]

Anyone know if Dave will do request circuit schematic for pay?

I am wanting to replace a 6V SLA battery with a 7.2V Sony Li-Ion camera battery.

I must limit the charge peak 8.4V to a max of 7.3V and hope to not draw current after reaching the 7.3V and lower as the battery draws down to extend battery life.


 

[SeanB]

2 chances, and the best one is pretty slim........

However, you can easily get a battery management board which will handle the battery itself ( if the Sony one does not have one in it already to do the undervoltage and charge protection) so leaving you just to put in a simple 2S lithium charge board, which handles charging the cell and connecting the load to it all in a small package. All available pre built on a PCB from your favourite PRC suppliers, or you can build them up from separate parts if you can design a PCB.

[Divvi]

Anyone know if Dave will do request circuit schematic for pay?

Short answer: No

He has stated multiple times on the Amp Hour that he doesn't like doing contract work.

[EEVblog]

You failed the first test of not being to contact me! So that automatically rules you out 
But no, I don't do contract work any more anyway.

[Audioguru]

Before you cause a Lithium Ion battery to explode or catch on fire (difficult to extinguish) you should learn about the basics. Go to www.batteryuniversity.com .
This battery has a label that says for you to use its specified charger only. Its voltage is lower than normal so maybe it is a Lithium-ferrous type instead of a normal lithium-cobalt type.

[timb]

Send me a pm, I do contract work.

[Mr 12]

Thanks Dave,
I really do appreciate all your hard work and Youtube!

I thought it would be worth a shot over the bow to see if I could land a good schematic to work from.

Thanks all


Audioguru I am not charging a battery to see it explode!

[Psi]

I'm sure Dave would design your circuit, if you offered  $100,000

[VK5RC]

I don't think Dave would,  he has expressed that opinion many times.
To the OP,   'have a go'  with a schematic after some research,  google is useful,    put it up,  I am sure you will get criticism both constructive and otherwise,  choose carefully which you listen to  and go from there.

[dadler]

You should also consider looking for an electronics forum to ask on--you may be able to find someone to help you or answer your questions.