Saving my 12v batteries with a DC-DC Boost Buck Converter!!

I found out that my 12v battery charger was putting out nearly 16v while charging my batteries!! They were literally sizzling inside!
Here I use a DC-DC Boost Buck Converter to lower the output to a much more sensible and safe 13.80v.

Here are some specs on the converter I purchased:

Input voltage: DC 3-15v
Output voltage: DC 0.5-30v
Input current: 3A (max)
Power: 25W (max)
Conversion Efficiency: 95%
Switching Frequency: 150KHz
Output Ripple: 40mV (max)
Load Regulation: +/- 0.5%
Voltage Regulation: +/- 2.5%
Operating Temp: -40c to +85c
Dimensions: 48mm x 23mm x 14mm approx.
Open Short Circuit Protection: Yes

Thanks for watching, and please check your chargers output!

[smoke_stackz]

What will happen if i let my buck converter charge my battery daily at 13v only it will damage the battery?

[monaxp]

It's may be OK for float charging...but for normal charging with 5 amp (just example) for long duration... Converter will heat up badly and will be fried ....this is my experience.