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Beware Of Old Stocks Being Dumped, In Which Batteries Could Be Dead

By on September 9, 2023
how to fix vacuum cleaner









Following two cases are illustrated to make the public aware of old stock getting dumped on us. The first case is my own and the second case is of a customer.

Case 1 : I ordered for a Portable Vacuum Cleaner online. (Details of the product can be seen in the following link: Powerful 4-in-1 Strong Suction Vacuum Cleaner by Home Depot© – The clean store ( ) I received the item on 21st of May and charged it full before use. When I tried, the battery did not last even for a minute, even though the seller claimed it was long lasting. I wrote to them on 24th May, asking for permission to return the defective product, as it could be returned within 7 days of receipt. There was no response to mails and Whatsup message, upon which I lodged a complaint to the National Consumer Forum.

As the item was urgently required by me and there was no warranty seal of any kind on the screws, I opened it and replaced the battery. Incidentally, the cleaner does not have a brand name or model number on it. The packet was also devoid of MRP, Date of Manufacture, Manufacturer details etc. which is mandatory. Anyhow, after replacing the battery, it worked very well. Here are a few pictures:

how to fix a vacuum cleaner

Case 2 : An LED Light of Mr Light was brought to me with the complaint that it was new but the light did not last even for a minute. It was given as a gift by someone who came from abroad and he was not able to make any warranty claim.

I knew immediately that this was yet another case and got a hunch that this also could be another 18650 battery! I opened the light and to my surprise found another 18650! Here are the pictures:

how to repair portable vacuum cleaner

The battery had a charging control board on top, which I carefully disconnected from the bottom (-) and top (+) wires. Here, you can have a close look of the charger used;

vacuum cleaner charger repair

I got a replacement battery, which was 2200mAh (better rated) and wired the same using solder, as I do not have a battery wire bonder. Then stuffed it inside the battery compartment and put it for charging.

The light was found working very well for a prolonged time. Here are a couple of concluding pictures:

fixing a portable vacuum cleaner

Missions easily accomplished and satisfactions to the power of two added to the collection, with of course lessons learnt!


This article was prepared for you by Parasuraman Subramanian from India. He is 72 years old and has more than 30 years’ experience in handling antique equipment like Valve Radio, Amps, Reel Tape Recorders and currently studying latest tech-classes conducted by Kerala State Electronics Technicians’ Association. He has done graduation in BBA degree, private diploma in Radio Engineering and retired as MD of a USA company. Presently working as Consultant to Hospital and other institutions.

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You may check on his previous article on Replacement Of Backlight And Adjustment Of Driver In Smart Light LED TV MODEL DAWN 40




  1. Robert Spoon

    September 9, 2023 at 6:37 am

    Parasuraman or should you be referred to as Parasuperman! In any case as a repairman for over 40 years on electronic audio and musical instrument equipment I am starting to run into defective replacement parts that are sold as new components on internet. And your example of products being sold as new may reflect that,as many of these products use components that are being sourced from surplus dealers. It seems to be one of the many hazards our industry has to overcome.

    • Parasuraman S

      September 9, 2023 at 2:01 pm

      HA! HA!Many thanks for your comments and sharing your experiences! This is something we all we love to live with! There is no other go!

  2. Tayo

    September 9, 2023 at 7:01 am

    Well done Sir. The batteries themselves were likely of questionable quality to begin with. Leaving them dormant in the warehouses only put the nail in the coffin. It wouldn't be a bad idea to stockpile good quality 18650s on our shelves. I personally have 40+ on standby for the inevitable cordless power tool or appliance that will come across my work bench.

    • Parasuraman S

      September 9, 2023 at 2:03 pm

      Many thanks for your comments! I am amazed to see the inventory you are carrying!

  3. Albert van Bemmelen

    September 9, 2023 at 3:06 pm

    Most interesting article dear Parasuraman! Here a datasheet of the G3JC sot 23-6 lion protection ic can be found:

    • Parasuraman S

      September 9, 2023 at 10:25 pm

      Many thanks for your comments and link, dear!

  4. Albert van Bemmelen

    September 9, 2023 at 3:31 pm

    It looks similar to the DW01 protection ic with low dropout 8205a regulator. But the pin configuration is different on the DW01 and the DP - delay testpoints pin on the G3JC chip is different.

    • Parasuraman S

      September 9, 2023 at 10:27 pm

      Your investigative methods are praiseworthy! Many thanks, dear!

  5. Albert van Bemmelen

    September 9, 2023 at 6:55 pm

    PS: Translating foreign PDF datasheets and other format documents is very easy with Google Chrome's translate. Choose item Documents above in the opened Google translate page, upload your document you need translating and wait until the online translated download is ready. FANTASTIC!, and a Free translate Service!

    • Parasuraman S

      September 9, 2023 at 10:29 pm

      Yes, dear, I am aware of this service and have used it whenever the information we look for appears in Chinese or other languages. Many thanks!

  6. Waleed Rishmawi

    September 9, 2023 at 7:23 pm

    there are a lot of fake battaries out there or even devices they say they are brand new yet are not and of course with fake devices there are alot of crooks who sells this kind of device that does not even work or does not last a day of work. when it comes to buying offline I never buy unless I am really sure and I read a lot about it and read comment of people who actually bought the same brand device. thanks for sharing my friend and have a blessed day

    • Parasuraman S

      September 9, 2023 at 10:30 pm

      Thanks for your caution from practical experiences. Many thanks for your comments too!

  7. Yogesh Panchal

    September 16, 2023 at 5:00 pm

    Good job! sir
    Does this Portable Vacuum Cleaner worth to buy?

    • Parasuraman S

      September 18, 2023 at 4:04 pm

      Yes, it is useful. When I bring a set to table after all external and internal cleaning, there will be still some dirt or dust inside when we remove board or other fittings. We can use this on the table as it sucks it fairly well.


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