Comments on: Defective Charger Spoiled Li-ion Battery In This SARIGAMA CARAVAN SC-03

By: Parasuraman S

Parasuraman S — Sun, 26 Apr 2026 00:23:42 +0000

In reply to Imoudu.O.

By backup, what I meant is DC battery supply when the mains fail. Many thanks for your comments and sharing the experience!

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By: Parasuraman S

Parasuraman S — Sun, 26 Apr 2026 00:21:16 +0000

In reply to Mark J.

Yes, it is worth its money for sure! Many thanks, dear Mark!

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By: Imoudu.O

Imoudu.O — Sat, 25 Apr 2026 19:59:50 +0000

I wonder what you mean by backup? I remember in the past I once repaired a bluetooth player with li ion battery having built in charger, which refuse to charge after repair...you know what, I just remove it from battery and charging system started working perfectly.Thanks for sharing.

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By: Mark J

Mark J — Sat, 25 Apr 2026 18:27:37 +0000

I am thinking about purchasing one of those battery spot welders. Once again great job on the repair Parasuraman.

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By: Parasuraman S

Parasuraman S — Sat, 25 Apr 2026 12:59:45 +0000

In reply to Yogesh Panchal.

Many thanks for your comments, Yogesh Bai!

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By: Parasuraman S

Parasuraman S — Sat, 25 Apr 2026 12:59:05 +0000

In reply to Waleed Rishmawi.

Glad to see your comments, dear friend! Many thanks!

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By: Parasuraman S

Parasuraman S — Sat, 25 Apr 2026 12:58:24 +0000

In reply to Albert van Bemmelen.

Many thanks for your expert comments and sharing your experiences again. The tip should be maintained well to have proper contact. Just cleaning it with IPA would do. Only occasionally, we need to use zero emery paper.

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By: Yogesh Panchal

Yogesh Panchal — Sat, 25 Apr 2026 09:01:11 +0000

Good Job!Sir
sometime Battery showing good working voltages but because of degradation it cant hold Current for longer time.
Investment in good Tools like battery spot welder makes work easier.

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By: Waleed Rishmawi

Waleed Rishmawi — Sat, 25 Apr 2026 08:59:36 +0000

Good fix my friend. Thanks for sharing and have a great blessed day

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By: Albert van Bemmelen

Albert van Bemmelen — Sat, 25 Apr 2026 08:34:50 +0000

Thanks for sharing another well fixed charger problem with the DW01 and its 2 mosfets pcb. Previously you already mentioned the satisfying use of the here also used 8000Watt portable spotwelder, why I recently decided to acquire that same welder too. Because it also got many positive reviews. Hopefully it will work much better than my previous rather worthless and quite heavy and much higher priced supercapacitor digital display spot welder and my other also disappointing working welders.
I however wonder if we need to make both tips of the copper welding probes pointier to make them perform better, or are we always able to use them as how they are (with diameter of 1.92mm) ? Because until now I only did grind of the top layer a bit when they are rather blackened to make the electrical contact better, so the current flow is higher.

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