@jasonloh7906, @jaylim94 , @davidke20

Thanks for writing here, and it would be preferable to pm me so i won't miss a service for you.

Alright i have pmed you respectively to learn more about and get it sorted.

Hi Noob, come on please be ethical abit, on-line is same as real life, whatever you have said is count on you.

THis is what i have mentioned to StevenLim88


And this is his reply:


The VS that you stock in from China, i have a few in my garage 1-2 years back as part of my research equipment. well if such high capacitance VS works, then you don't need a VS at all, because your battery is already VS witih huge multi-farad capacitance. Too high capacitance on 1 pcs of capacitor (i.e. 80K uF) will act very slowly can't filter ripple signal which happens at 1-50ms

Same as audio capacitor can that rated at 2-10 Farad (2,000,000 uF) cannot be served as VS because they are charge/discount much slower than smaller caps. That's the reason why building a VS need to be small and big combination to be able to filter ripple voltage.

Noobdao, do you know all these ?

As in Light dim issue, etc, i provide 2 years warranty, pm me to get it answered and solved or get a replacement unit is a wiser choice isn't it?

Ripple voltage is a AC voltage happens on DC electricity. In layman term representation "take a microscope, and zoom down into the voltage up to 1000 pulse / seconds or more, you will see something that is bouncing" and because it bounce in such a high speed rate, big capacitor/ battery is not able to catch up it's pace. There are many different bouncing frequency, so a combination of big / small caps are needed.

The super caps are normally for welding and yes it's such big capacity that can replace battery

There are a lot more behind......

Firstly, you have to understand the root cause. When aircond kick, there are few things could happen:

1. Compressor hit and load to the accessory belt, and then affecting the spinning of alternator and engine power
2. Electric consumption increased (especially with fan spinning together)

Then voltage drop happens that will cause lower voltage supplied to light and they dim.

How to help the situation:

1. Battery condition: Battery will help to compensate the dropping by "sacrifice" himself in supplying of current from itself. If you never fill battery water or battery in bad condition, then battery will be serve as additional load because it will eat more current instead of supplying current. Guys note that most so called maintenance free battery are not exactly maintenance "free" but they are using the same water as wet battery does. You can fill water in it to ensure it works in tip top condition. (But im sure proton's ramcar battery is water fillable)

2. Cabling (ground cable). For battery current to come out fast enough, ground cable play an important to carry the current out to compensate. Ground cable also carry current from VS and alternator to everywhere.

3. VS can also compensate the dropping by a fraction despite this is not the main function of a VS. Because VS is more for filtering high frequency ripple. VS is connected to battery and ground cable is playing big role to carrry vs' current as well.

So, it's not just as simple as abc when we dealing with light dim issue and will need some troubleshooting work. Well most cases encountered is due to ground cable harness issue.

Bro, you sounded more electrical / electronic engineer