Hi

I really appreciate your time and wanted to ask if the following was possible...

I have a 50ah battery pack (lipo) that has various output ports and voltages. These are as follows...

DC Output current 5V/8.4V/9V 3A (max) 12V/16V(compatible 16.5V)/20V (compatible 19v,19.5v)4.7A(max)
USB Output current 5V/9V/12V 3A(support fast charging)
TYPE-C Output 5V 3.5A(can charger MacBook)

I want to use one of these outputs to charge a 12v 10ah lead acid baterry. However although I'm not that great with electronics I understand it would require 16v to charge and have some type of charge controller? This would control the charging of the battery with a visual indicator also available.

Now that's what to want to do, is it possible? Is there something out there presently that you know of that would solve my conundrum?

I'm really sorry of this is a silly question. I have googled this quite intensively with no luck. I could be using the wrong keywords...

Many thanks for your time

 

Take a look at this ...
http://www.powerstream.com/CHB0644.htm
... might work with the 20v option.

 

http://batteryuniversity.com/learn/article/charging_the_lead_acid_battery

 

Yes, you need some sort of regulator/current-limiter.
What maximum charge current do you want from the 16V output?

 

Yes, you need some sort of regulator/current-limiter.
What maximum charge current do you want from the 16V output?

1 or 2a I would say.

 

Then you could use a LM317 regulator, adjusted to the desired charge voltage (typically around 14v).
The LM317 will internally limit the current to about 1.5A.
When the battery nears the set voltage of the regulator, the current will taper off.
But you will need to put in on a heat sink since it can dissipate up to about 5W.