QUOTE(System Error Message @ Mar 24 2022, 04:40 PM)
1) about 10 years old. Was used for battery backup for alarm. restored up to 8V meaning that some cells were shorted. Inside was already corroded.
2) around damansara/PJ area, not far from MRT.
3) the jumper battery only needs CCA or cold cranking amps, the ability to supply loads of amps initially. Hence actual capacity doesn't matter. Car's battery must run the electricals for a set amount of time in the event of an alternator failure or act as a capacitor for the times when the alternator can't fully supply all the amps. This is why LED headlamps and brakelights make a whole lot of difference if you sit at night idle with the lights on. I myself have a powerbank jumper but a 50% usable capacity is still decent for backup power. So a repaired lead acid battery may not be suited for a car if it was brought to life from dead.
4) theres plenty, some use a couple of chemicals to add in, i prefer the simpler one that uses battery water + special charger. Some do an entire battery disassembly, clean and add chemicals.
5) I'm doing this for fun, yes i have a design, i'm about to purchase the missing parts needed to test. Its not table salt though as those are not rechargeable. I'm actually a CS guy rather than a chemist or an inventory but i am pissed at the industry taking a bad turn in software and devops. Later on if you read my blog you will understand my hate towards certain languages and frameworks.
6)The thicker the plates the longer they last, because the plates slowly dissolve away. The capacity is determined by the amount of usable metal in the reaction and the electrolytic amount. Its all about being able to store those ions, hence some idiot i read a useful technical article about thinks that lithium is the only high density metal around you can use, but that is simply not true. My design would theoratically do 4V per cell based on the unpure anode (most scientists only go from pure material lists when figuring out voltage and design, but mixed materials can actually produce even more volts or charge). Whenever sulphur or similar is involved, crystalisation can form on the plates which can also "end" their life. pulsing can decrystalise and break the crystal away. The reason why you need a high voltage for that is that the crystals are the electrolyte which actually have a much higher voltage range apart (in a table salt water, this will be sodium on one end, chlorine on the other). However high voltages on any water based electrolyte including lead acid batteries (the acid have water, hence battery water being pure h2o) do electrolyse into gas in high voltage. This its difficult to repair a battery where the plates have dissolved, but you can decrystalise a battery battery easily. Some i've seen show crystalisation on their custom batteries at 0V, like with aluminium where you can physically see the crystals in their transparent plastic packs.
7) long ago back when cars only used the battery to start and barely had any electrics, the life of a typical wet lead acid battery was 6 years. This was before we even knew about the decrystalisation process either, and the metal plates used were also thicker. So with a yearly decrystalisation (repair) charge and maintenance, including good practices, it is possible. Double check the specs of the battery in your friend's car that it is AGM. if it is located in the boot, and you repair that battery every year, avoid using gadgets with the engine off, it could last to 6 years before needing to open the battery and refill battery water. As long as you do not damage/short the cells it will do fine. However more realistically you can expect 3-4 years with yearly repair before having to open and add battery water. Make sure to check the specs as for my alarm battery were impossible to find despite it being GP branded with a modal number, the type of battery was not listed anywhere and i had to learn the whole lead acid stuff to figure out it was AGM.
Repaired batteries will never be as good as new capacity wise, but doesn't mean they are useless. Reconditioned batteries, you can expect at most 80% lifespan of a new, this is because the battery electrodes are not new metal, its the same metal with chemicals used to clean and recreate whats possible.
Repaired - gone through decrystalisation and electrolyte added
Reconditioned - insides cleaned and replaced, chemicals used but metals are not replaced.
new - old battery taken apart fully, recycled and processed into new raw materials which are used to make a new battery.
Terminology only applies to lead acid. All lead acid batteries new today are made from old ones.
Note: if you repair your battery well and it lasts for 10 years, you will not be able to recondition it as by then the metals would be dissolved. Reconditioning is environmentally hazardous, so you save the environment by repairing your batteries then exchanging them when buying new for them to be recycled. Since most car owners replace their batteries every 2 years, those batteries are reconditioned to provide like new performance, but if you can use a battery till it dies through no more metal, then it cannot be reconditioned. Both the reconditioning or recycling process is toxic and dangerous, so better to choose the recycling only by repair.
Yes, sealed batteries are a general term. If a battery is sealed and cheap, then it is definitely AGM if the price is close to flooded lead acid. This leads me to believe that if the difference between a wet car battery and sealed one is rm 20 (10%), then it is most likely AGM. Infact the small sealed lead acid batteries used for toys, alarms, etc are also AGM. Its so difficult to find the specs that i had to learn out a lot about lead acid just to figure out the type.
The more expensive sealed batteries you buy for cars that are like RM 400 are most likely VRLA where sealed and wet are around rm 200. Most common are wet and AGM due to pricing being very close together. To me i don't see much benefit in going for very expensive if you understand the battery and can treat it well. Some people hack their own dual batteries, small lead acid battery just to start the car, and use lithium battery if the current pull is less than certain amount allowing the car to be kept parked for long periods of time or lets you sit in traffic with the engine off and AC on. Some just do supercaps + lithium. mercedes uses a flat motor at the end of the engine as the starter, alternator and supercharger (electrical) with a lithium battery pack for the supercharger (its not a hybrid). This mercedes is not sold in malaysia and is only 1 model as a proof of concept.
1. 10 years is about there for an AGM battery. A forummer here brought back an imported car and that battery from overseas lasted really really long. Our currency is falling like crap and as a result quality is being sacrificed, unless one intends to pay for quality. Ini semua pasal ada orang bodoh dekat Parliament.
2. I am located too far away from you. The cost of delivery those batteries would not be feasible. Your only option is put a word out among your neighbour and buy their dead batteries so that you can play with them.
3. That is why those dead batteries cannot be use as jumper battery. A guy few doors away kept his dead batteries thinking they would be handy just in case he needed batteries to jumpstart. Bateri dah kong, simpan kat tu, lagi bateri tu kong kong. A dead battery will never have the CCA to help jumpstart another dead battery. If it could help jumpstart another dead battery then it wouldn't be dead now wouldn't it, but continued to be in service in someone else's vehicle.
Having said that, I wonder if weak batteries work like this, the combination of both batteries capacity if combined together are just sufficient enough to turn over the engine. Havent done such a thing before. LOL
4. About reconditioning batteries ie taking out and placing in new plates, new electrolytes etc etc like in those YouTube videos, can anyone point out what is the biggest flaw in those batteries ?
5. You have a blog bro ? Please share. TQVM
6. I have no idea what you are talking about. π
7. Yes the old Merc battery was located in the boot area, the Dr. showed me when I went to test the DIN100 battery and it was still in good condition despite it being 7 years old. He drives it around and he always parks in the shade or in his porch away from the sun. Cannot remember what battery brand it was.
8. I dunno know if Repaired Batteries are even possible. Some have written that pulsing etc dont really work. So I am leaning towards that such "Repaired Batteries" are actually batteries that are still in relatively good condition but were scammed away from their owners by unscrupulous out to make a quick buck.
A lady once called me for help with her dead battery. Upon testing I knew immediately that her electrical charging system had given way and she told me of her nightmare with endless battery changes, workshops etc etc. So I warn her not to call anyone else but me if ever her battery fails. You cannot imagine the number of times I met with workshops and tricks they do to force her to buy another new battery and everytime I bailed her out. If I am not mistaken I think I help her 3 times, everytime the battery was drained, I would charged it back up like new to her amazament, despite what the mechanics were telling her. No matter how good the Century Battery was, despite what other had said, everytime I brought it back to her, it was like new. I believed in the end she had sold that vehicle because every mechanice was scamming her left and right. Poor lady.
What I am trying to say is that is pressure to close the sale on a new battery and to relieve the owner of its still relatively good battery unknown to the owner. That way such used good batteries can be "repaired" and resold again at a better price, almost without any warranty attached at all. I didn't know about such things but it was a client who told me about it and even offered to show me which battery shop was indulging in such practices in Duyong area. Thank goodness that shop wasn't a Century dealer. Malu sial. This shop was taking a notch higher selling repaired batteries at full price like new, with box and all. Memang terkejut la got such practices. I often wonder if the accident that claimed 10 lives on Elite Expressway is linked to such "repaired batteries".
Note : Nope I dont do repairs nor reconditioning at all. Crazy man who wants to deal with all the hazardous waste. All traded in batteries are scrapped. I take another step further all Century Battery MUST be traded-in and I will deal with them accordingly so that they will not be able to traded as 2nd hand batteries whatsoever. Other battery brands I am not interested, if the owner wants them they can have it. Lesser work for me.
I hear you man, the average life span is 2 years. That is because the owners themselves are doing all kinds of jack shit things to their batteries and expect it to last ? They are nuts man. Only those who wants to be frugal and learns how to use their battery power wisely will be able to extend their battery life span.
This post has been edited by Roman Catholic: Mar 25 2022, 07:32 AM