Enye inqabile i-wholesale lithium ye-LIOIM ye-LIO ye-IOI yepakethi yebhetri

Ibhetri ye-lithium-ion ikwabizwa ngokuba yiBe-Ion.Ibhetri enokuphinda isebenze esebenzisa i-lithium i-ions njengeyona nto iphambili kwi-electrolyte yayo.Iinzuzo zayo zibandakanya ukuxinana kwamandla aphezulu, ireyithi yexabiso eliphantsi kunye nobomi bomjikelo omde.Kungenxa yoko le nto kufanelekile kwizisombululo zoyilo ezitsha.

Molo, ndi-Eddie osuka kwi-KET.Ndiza kukukhokela kwiphepha lesisombululo sokugqibela.

Neqela le-20-D-D-D & D, inkampani yethu inamandla Uyilo lwe-lithium yesiqhelo ye-lithium-ion Ukuhlangabezana neemfuno ezithile zemveliso yakho.Nokuba yipakethi encinci yeseli okanye ipakethi yebhetri enkulu okanye ipakethi yebhetri enkulu, i-KET inokuyila isisombululo esikhuselekileyo nesinokuthenjwa.

I-KET isebenzisa inkqubo yolawulo esemgangathweni engqongqo yokuqinisekisa ukuba zonke iipakethi zebhetri ze-IOI ze-IODI zihlangabezana nemigangatho ephezulu yokhuseleko ngaphambi kokuba bashiye indawo yethu.Umzi-mveliso we-KET yi-ISO 9001 eqinisekiswe kwaye iibhetri yi-UL, i-FCC, iROHS, UNERS 62133, i-IEC iqinisekisiwe.Kananjalo unokujonga isiqinisekiso sethu kunye neengxelo zovavanyo ngolwazi oluthe kratya.

Kutheni usinyula?

lithium battery wholesaler Iminyaka eli-13 yokuphuhlisa ibhetri kunye namava okuvelisa.

Lithium Battery Producer Buyisela ubungakanani bobukhulu obahlukeneyo beebhetri ze-acid ezikhokelayo nge-LITIIZI ze-RVs, iinqwelo zegalufa, iifomathi, kwaselwandle, nangaphezulu.

Top Lithium-Ion Battery Manufacturers I-Lithium ephezulu ye-Lithium ye-Lithium: Sinentsebenziswano ebonakalayo nge-Catl, i-BOD, i-Samsung, i-LG, zonke iipakethi zebhetri zenziwe ngeeseli zeBanga.

lithium battery bulk Zonke iipakethi zebhetri ze-lithium ze-ion ziphantsi kwenkqubo yokuhlolisisa esemgangathweni ngaphambi kokuba kuthunyelwe, kubandakanya nokuhlolwa kwezinto ezingenayo, uvavanyo lokwahlula umbane, uvavanyo lokwaluphala, njl.

wholesale lithium ion battery Isakhono esiqinileyo se-R & D Okwangoku, i-KET ingaphezulu kwama-20 r & D, esisivumela ukuba sibonelele ngezisombululo kwiimfuno ezahlukeneyo zabathengi ngokwezifiso ngaphakathi kweeyure ezingama-24

wholesale lithium batteries Iiyure eziyi-7 * ezingama-24 kwi-Intanethi

Funda nzulu

Ibhetri eshushu ye-LI-ion

Ibhetri ye-12v lio

•12V 4ahIbhetri ye-li-ion

•Ibhetri ye-12V ye-lii-ion

•I-12V 100 yebhetri ye-100

•I-12V 200ah li-ion

•Ngaphezulu kwe-12V uthotho

Ibhetri ye-lio ye-lio

•I-24V 10aIbhetri ye-li-ion

•I-24V 50aIbhetri ye-li-ion

•I-24V 100ahIbhetri ye-li-ion

•Ibhetri ye-24V ye-200 ye-le-ion

•I-24V uthotho

I-36V li-ionIbhetri

•Ibhetri ye-36V 2 ye-lion ye-ion

•Ibhetri ye-36V ye-lii ye-ion

•Ibhetri ye-36V

•Ibhetri ye-36V ye-le-ion ye-ion

•Ngaphezulu kwe-38V yothotho

Ibhetri ye-48V ye-ion

•I-48V 20ah I-LI-ion

•Ibhetri ye-48V ye-iyo ye-ion

•I-48V 100 ibhetri ye-ion

•48V 200ah li-i-ion ye-ion

•Ngaphezulu kwe-48V uthotho

Nxibelelana ne-Lithimu yebhetri

I-Lithium-ion yebhetri yepakethi

Forklift

Inqwelo yegalufa

I-hoverboard

Ebike

Imoto yombane

Yiya kart

Rv

Thuthuzela imoto

Isithuthuthu

Marine

I-ATV

Isitulo esinamavili

Inkqubo yesola

I-scooter

Iski sejethi

Skiteboard

Ipakethi ye-li-ion ye-LI-ion ngoku

Ungayifumana njani ipakethi yesiqhelo ye-lithium ye-ion ye-ion?

Ngaphambi kokuba uthumele isicatshulwa sakho, ukuqinisekisa ukuba sinokufunda esona sisombululo sibalaseleyo, nceda unikezele ngale ngcaciso ilandelayo:

1. Isicelo

2. Ukusebenza kunye ne-curmas

3. Umthamo

4. I-Voltage

5. Ubungakanani bebhetri

6. Uhlobo lweDilesi

7. Khetha i-chengqa yebhetri: i-PVC, ukufunxa kweplastiki, intsimbi yensimbi

Jonga ngakumbi kwisithuba: Amanyathelo ama-7 okwenza iipakethi zebhetri ze-lithium?

Fumana ikhathalogu:

I-Lithium-ion yepakethi.pdf

Fumana izisombululo zebhetri zeLithium

Iinzuzo ze-lithium-ion-ion-ion xa kuthelekiswa neebhetri ze-acid

Ukuxinana kwamandla aphezulu
Ibhetri ye-12v ka-12v ka-12v ye-ion-ion inobunzima obungama-60-70 iipawundi, ngelixa ibhetri ye-AID ye-AID inobunzima obuyi-130-160-10.

Ixesha elide lobomi
Ibhetri yesiqhelo ye-lithium-ion inokuba nayo i-mingces yomjikelo wama-500-1000 (ukuba ingaba i-willpo4), ngelixa ibhetri ye-acid ekhokelayo inokuba nobomi bomjikelo wama-200400.

Ixesha elifutshane lokushasha
Ibhetri yeLithium-ion inokuhlawulelwa ngokukhawuleza kunebhetri ye-Acid.Umzekelo, ibhetri ye-lithium-ion inokuba ihlawulwe ukuba ihlawulwe ibe yi-80% yamandla kwiiyure ezi-1-2, ngelixa ibhetri ye-acid-acid inokuthatha iiyure ezingama-4-6 zokufikelela kwinqanaba elinye.

Ixabiso eliphantsi lokuzibandakanya
Ibhetri ye-lithium-ion inokuphulukana ne-2-3% yentlawulo yayo ngenyanga, ngelixa ibhetri ye-acid ekhokelayo inokuphulukana ne-6-8% ngenyanga.

Impembelelo yokusiNgqongileyo
Ibhetri yeLithium-ion inobuhlobo ngakumbi kunebhetri ye-Acid-Acid, njengoko iqulathe izixhobo ezinobungozi kwaye kulula ukuyisebenzisa kwakhona.

Ixabiso eliphantsi
Nangona iindleko zokuqala zokuthenga zeLithium-i-ion-ion iphezulu, zingabizi kakhulu ngokwemigaqo yobomi.

Ipakethi yebhetri yesiqhelo ngoku

Incwadana epheleleyo yeebhetri ze-lithium ion

Is it OK to leave a lithium-ion battery on the charger overnight?: It is generally safe to leave a lithium-ion battery on the charger overnight, as most lithium-ion battery chargers are designed to stop charging once the battery is fully charged. But it's recommended to unplug the device once it's fully charged and to use a compatible charger to ensure the battery's longevity.

How many years does a lithium-ion battery last?: The lifespan of a lithium-ion battery can vary depending on several factors, including its chemistry, usage patterns, and environmental conditions. Here's a breakdown of some common types of lithium-ion batteries and their typical lifespans:

LiCoO2 batteries: These are the most common type of lithium-ion battery used in consumer electronics like smartphones and laptops. They typically last between 2-3 years or 300-500 charge cycles, whichever comes first.

LiMn2O4 batteries: These batteries have a longer lifespan than LiCoO2 batteries, typically lasting between 4-5 years or 600-800 charge cycles.

LiFePO4 batteries: These batteries are commonly used in electric vehicles and solar energy storage systems. They have a longer lifespan than LiCoO2 batteries, typically lasting between 5-7 years or 2000-5000 charge cycles.

Do lithium batteries go bad if not charged?: Lithium-ion batteries are possible to go bad if left uncharged for a long time. It is because a natural self-discharge process occurs when the battery is not being used, which causes the capacity of the battery to decrease over time. If a battery is left uncharged for a long time, the battery voltage will drop below the recommended level and it will become difficult to recharge or even impossible to recharge.

To avoid these problems, I recommend that you can store your Li-Ion batteries in a cool, dry place with a charge of around 50% to maximise their life. If you are storing the battery for a long period of time, it is best to charge it to around 50% every three to six months.

Can you offer cable for our PD 18W charger?: We do not provide cable. However, if you have a need for a charger you can contact our sales to assist in purchasing on your behalf.

What is the warranty of your PD 18W charger?: The warranty of our charger is one year.

How long is the product warranty？: Usually 12 months. Long-term customers can negotiate the duration of the warranty.

Can you offer the certifications for our PD 18W charger?: We make some regular charger certificates every year. If you have special certification needs, we can assist you with fast processing.

Are Lithium Batteries Safe?: KET's lithium batteries are extremely safe and reliable. Every KET lithium battery is protected by a Battery Management System (BMS) against overcharging, overheating and short circuits, which also extends the life of the battery.

To guarantee the quality of the lithium battery pack, we use A-grade cells from major brands such as CATL,Samsung etc. This also contributes significantly to the safety of the KET llithium battery pack.

However, like any other battery, lithium batteries can still pose a safety risk if they are not used or handled correctly. So there are a number of tips to keep in mind when using lithium batteries, including storing them in a cool, dry place, avoiding overcharging or discharging them and handling them with care.

How should I store my battery?: To store a lithium-ion battery properly, you should follow these guidelines:

Charge the battery to approximately 50% capacity before storing it. This helps to maintain its overall health.

Store the battery in a cool, dry place. Avoid storing it in direct sunlight, as high temperatures can degrade the battery's performance and lifespan.

Keep the battery away from flammable materials and sources of heat.

If you're storing the battery for an extended period of time, check its charge level periodically and recharge it as needed to maintain the 50% charge level. Check-ups once every 3-6 months.

How to charge a lithium ion battery?: KET Lithium ion batteries perform best when charged by a lithium compatible charger.

What is fast charger IC chip brand?: Injoinic, Weltrend, Navitas, Power Integration, Innoscience

Can I get a free sample?: If you require samples for quality checks, you should pay for the samples. After bulk order confirmed, the sample fee can be returned to you.

What equipment do you have in production?: Forming machine, wave soldering, dip soldering clamp, hydrometer, test frame, load meter oscilloscope, aging frame, withstand voltage meter, electronic load voltage regulator, comprehensive tester, voltage regulator and other equipment

What’s your standard and process for key SKDs like PCB board?: The standard is GB2828.1-2003 with sampling level Ⅱ with AQL:CR 0, MA 0.25, MI 1.5.
The test content include package, appearance, structure and size, electrical properties, tin test, copper adhesion, fireproof test per the IQC SPI file.

Ngaba iibhetri zeLithium zikhuselekile?: Iibhetri ze-KET ze-I-Lithium ze-Lithium zikhuseleke kakhulu kwaye zithembekile.Yonke i-KET ye-KET LITIM ikhuselwe yinkqubo yolawulo lwebhetri (ii-BMS) ngokuchasene nokusebenzisa ngaphezulu kwesebuthelo, imijikelezo ejikelezayo nefutshane, ekwandisa ubomi bebhetri.

Ukuqinisekisa umgangatho wepakethe ye-Lithium, sisebenzisa iiseli zenqanaba le-A-Geages kwiimpawu ezinkulu ezinje nge-Catl, i-Samsung njalo le negalelo elikhulu kukhuseleko lwebhetri ye-KET llithium.

Nangona kunjalo, njengayo nayiphi na enye ibhetri, iibhetri ze-lithium zisenokubeka umngcipheko wokhuseleko ukuba azisebenzi okanye ziphathwe ngokuchanekileyo.Ke kukho inani leengcebiso zokugcina engqondweni xa usebenzisa iibhetri ze-lithium, kubandakanya ukuzigcina kwindawo epholileyo, eyomileyo, ukuthintela kwaye ubaphethe ngenkathalo.

Ndingayigcina njani ibhetri yam?: Ukugcina ibhetri ye-litium-ion ngokufanelekileyo, kuya kufuneka ulandele ezi zikhokelo:

1. Ibheja ibhetri ukuya kuthi ga kwi-50% yamandla ngaphambi kokuyigcina.Oku kunceda ukugcina impilo yayo iyonke.

2. Gcina ibhetri kwindawo epholileyo neyomileyo.Kulumkele ukuyigcina ngokukhanya kwelanga ngokuthe ngqo, njengoko amaqondo obushushu aphezulu anokuthi akhuphe intsebenzo yebhetri kunye ne-wospan.

3. Gcina ibhetri kude nezinto ezinokutsha kunye nemithombo yobushushu.

Ukuba ugcina ibhetri ixesha elide, jonga inqanaba layo elitshatileyo kwaye liyithumele kwakhona njengoko kufuneka ugcine inqanaba lama-50%.Ukuhlolwa kube kanye kwiinyanga ezi-3-6.

Ungayibiza njani ibhetri ye-lithium ye-lithium?: I-KET Lithium Ion i-Ion yenziwa kakuhle xa ihlawuliswa nge-lithium ehambelanayo itshaja.

Zithini izibonelelo zokuthenga i-lithium Butters evela eChina?: Kukho izibonelelo ezininzi zokuthenga Iibhetri ze-lithium ezivela eTshayina:

Isebenza kakuhle emalini: Abavelisi bebhetri yaseTshayina Ihlala inika amaxabiso okhuphiswano ngenxa yexabiso lemisebenzi kunye neendleko zemveliso xa kuthelekiswa namanye amazwe.Nangona imveliso eIndiya naseVietnam ikwavelisiwe kule minyaka ingama-suaper, indleko ye-China iphantsi, i-China iphantsi ngokungqinelana nentengo yebhetri ye-lithium kunye nobuchule babasebenzi.

Uluhlu olubanzi lweenketho: I-China inomzi mveliso webhetri enkulu kunye nabavelisi abaninzi, ukubonelela ngeendlela ezahlukeneyo ngeendlela zebhetri, amandla, kunye nokucwangciswa.Sele kukho iimpawu ezininzi zebhetri ze-lithium ze-lithium e-china, ezinje nge-byd, ikati, njl.

Ubuchule betekhnoloji: I-China yenze inkqubela phambili ebonakalayo kwitekhnoloji yebhetri ye-Lithium kwaye inamacandelo ophando olomeleleyo nophuhliso, aqinisekisa ukufikelela kwitekhnoloji yebhetri yebhetri kunye nezinto ezintsha.

Isikali kunye nemveliso yemveliso: Abavelisi baseTshayina banokwazi ukuvelisa iibhetri ze-lithium ngesixa esikhulu, zenze kube lula ukudibana ne-bulk okanye ii-odolo eziphezulu.Umzekelo, i-KET, njengomvelisi webhetri ye-lithium onamandla, ngoku iyakwazi ukuvelisa iibhetri ezingaphezulu kwe-2,000 ze-lithium ngemini ngosuku.

Ukuzaliswa kwezakhono kunye ne-OEM: Abavelisi baseTshayina banikezela ngeenkonzo zokwenza izikolo, bavumela abathengi ukuba bayile kwaye bayile i-lithium ye-lithium ze-lithium kwiimfuno zabo ezithile.Umzekelo, kwi-KET, siye sanikezela ngokwezifiso kwaye senziwe i-lithium yebhetri ye-lithium-ion yamashishini ahlukeneyo kangangesithuba seminyaka eli-13.

Ukusekwa kweTyatha: I-China inotshetshetshe nonikezo lwe-lithium ze-lithium ze-lithium, ekuqinisekiseni ukufunyanwa okusebenzayo kwezinto ezingafunekiyo, izinto kunye nezixhobo zokuvelisa.Umzekelo, kwi-Shenzhen, apho i-KET ifumaneka khona, unokwenza phantse konke ukufunwa kwezinto ezingafunekiyo zeLithium Barters apha.

Ukujonga ukuthembeka I-China Li-ion yebhetri? Nxibelelana ne-KET namhlanje! Ngezatifikethi zeMveliso ebanzi kunye nezakhono ezinamandla ze-R & D, sikugubungele.

Ngaba kufuneka ugcine iibhetri ze-lithium zihlawuliswa ngokupheleleyo?: Hayi, Akufuneki uyenze.Ukutshabalalisa ngokupheleleyo ibhetri ye-lithium-ion kwaye kuyishiya kwi-100% intlawulo yexesha elide kunokubangela uxinzelelo kwibhetri kwaye kukhokelele ekukhokeleni amandla kunye nexesha elipheleleyo lobomi balo kunye nexesha elipheleleyo lobomi balo.

Ukuba uceba ukugcina iibhetri ze-lithium-i-Ion ixesha elide, sicebisa ukuba ubagcine malunga ne-50% intlawulo kunye nendawo epholileyo, eyomileyo.Kuya kufuneka ujonge kwaye uphinde uphinde uphinde ubeke iibhetri amaxesha ngamaxesha ukubathintela ekukhupheleni okanye ukuphulukana nemangaliso yabo ngokupheleleyo.

Ngaba iibhetri ze-lithium ziyavuza njenge-alkaline?: Iibhetri zeLithium ngokubanzi azivuleki njengeebhetri zealkaline.Nangona kunjalo, kwiimeko ezigqithisileyo, ukuvuza kusenokwenzeka.

Ibhetri ye-Alkaline iqulethe i-electrolyte yolwelo enokukhupha ngokulula ukuba ibhetri yonakele okanye ifikelele ekupheleni kobomi bayo.Oku kuvuza kunokukhokelela ekucocekeni nasekutyeshelweni kwizixhobo ezijikelezileyo.

I-Lithium Bebees ayihambelani ekuvusweni ngenxa yoyilo lwangaphakathi kunye neekhemikhali ezisetyenzisiweyo.Kukho amanqaku ama-3 aphambili:

1. Ukubandakanya i-li-ion ye-i-i-i-li-polymer, esebenzisa i-electrolyte eqinileyo okanye i-gel electrolyte engapheliyo ekuvusweni.

2. Ezinye iibhetri ze-lithium zikwasebenzisa i-electrolyte yolwelo, kodwa ii-electrods ezilungileyo nezingalunganga zebhetri yeLithium zahlulwe yidyrorount diaphragm.Ubukho besi sithintelo kuthintela ukuvuza kwe-electrolyte.

3. Imeko yebhetri ye-Lithium ihlala itywinwe ukuqinisekisa ukuba ngaphakathi kwibhetri yodwa kwindawo yangaphandle.

Ke, kwenzeka ntoni kwibhetri ye-lithium ethathwa njengeqatha kangaka?

Iimeko ezigqithisileyo ziquka njengomonakalo omkhulu womzimba kwibhetri ye-Lithium, egqithisileyo okanye ngaphezulu-i-express, imvakalo-mali ephantsi, iphantsi okanye ephantsi okanye iphantsi okanye iphantsi kweqondo eliphantsi.Nangona kunjalo, la matyala anqabile kakhulu.Ke iibhetri zeLithium zisakhuselekile kakhulu.

Ke, yintoni endifanele ndiyenze ukuba ibhetri ye-lithium ivuza?

Ukuba udibana neemeko ezingaqhelekanga kwibhetri, ezinjengokuvuza, ubushushu, ukwanda, ivumba, njl njl, kuya kufuneka uyeke ukuyisebenzisa kwangoko.Amanyathelo athile alandelayo:

1. Kulumkele ukunxibelelana: Kulumkele ukunxibelelana ngqo nolwelo oluvuzayo, ngakumbi ukuthintela ukudibana nolusu, amehlo okanye umlomo.Ukuba ngengozi unxibelelana nolwelo, ngokukhawuleza uqhube indawo efanelekileyo ngamanzi kwaye ufune uncedo lwezonyango.

2. Sebenzisa izixhobo zokukhusela: Nxiba izixhobo ezifanelekileyo zokhuselo, ezinjengeegloves, iiglasi, kunye nemaski, ukuthintela ukunxibelelana nolusu, amehlo, okanye ukuphefumla kweegesi ezinobungozi.

3. Umoya: Qinisekisa ukuba ukuchithwa kwindawo enesisiseko esingenampilo ngexesha lokuphatha igesi enobungozi ukubaleka.

4. Coca ukuthoba: Qokelela ngononophelo ukuphanga kwiingxowa zeplastiki.Kulumkele ukusebenzisa izixhobo zensimbi, njengoko isinyithi kungenzeka ukubangela iintlantsi okanye ezinye iingozi.Nje ukuba i-spill iqulethe, emva koko ibeke ibhetri kwibhetri ehlaziyiweyo yebhetri.

Yintoni umzobo webhetri ye-lithium ye-ion?: Oku kulandelayo ngumzobo webhetri ye-lithium-ye-Ion-ion kwiindawo zokubiza kunye nokugcuma kwamagama.

Ithini i-Lithium Cat yeTshati yeCatri?: Le grafu ilandelayo yidatha evavanywe ngeenjineli ze-KET ngeseli yeBe-ion.

Nguwuphi umahluko: Li Po PV I-IONI ye-ION: I-Li-ion-ion-ion) kunye ne-lipo (i-lithium (i-lithium polymer) iintlobo zeebhetri ezinokuphinda zifumaneke zeLithium.Ngelixa babelana ngokufanayo, kukho umahluko phakathi kwabo:

Electrolyte: I-Lithium Polymer Bebees isebenzisa i-electrolyte eqinileyo, ngelixa i-lithium ion ibhetri ngokubanzi isebenzisa i-soltrolyte yolwelo ..

Ukuxinana kwamandla: I-Lipo ibhetri ngokubanzi inexesha eliphezulu lamandla xa kuthelekiswa neebhetri ze-li-ion.Umzekelo, ukuxinana kwamandla kwi-18650 i-Lithium-ion-ion ye-Ioy imalunga ne-500 who / l, ngelixa ibhetri yePolymer isondele kwi-600 wh / l.Nanku nje umzekelo.Ngapha koko, ukwakhiwa kweekhemikhali zeLithium-ion kukwahluka kakhulu, ukwenziwa kobunzima bemandla kuya kuba kwahlukile, nantsi ke angabacaci.

Ubume kunye nokuguquguquka: Nangona i-Lithium-ion ingenziwa ibe kukwenziwa kweemilo ezahlukeneyo zebhetri.Ngokuphathelele ubume kunye nobungakanani, kucacile ukuba i-Lithium ye-polymer ibhetele.Kungenxa yokuba zinokwenziwa kwiifom ze-SLIM kwaye ziguqulwe, zibavumela ukuba zilingane nezithuba ezingaqhelekanga okanye zihambelane noyilo oluthile lwesixhobo.

Xa kufikwa ekukhetheni phakathi kwe-lipo kunye ne-li-i-iI-ion, isigqibo sixhomekeke kwizithintelo zesicelo.Iibhetri ze-lipo zihlala zikhethelwa kwizicelo apho kukhanya, ukuguquguquka, kunye nokuxinana kwamandla aphezulu kubalulekile, njengakwimilo ye-frones, izixhobo eziphantsi kwerediyo.I-Li-ion isetyenziswa rhoqo kuluhlu olubanzi lwezixhobo, kubandakanya nee-smartphones, iilaptops, izithuthi zombane, kunye nezixhobo zamandla.

Ziyintoni iibhetri ze-lion zihlaziyiwe njani?: 1. Umzi-mveliso wokurisayikilisha webhetri uya kuqokelela iibhetri ezivela kwimithombo eyahlukeneyo, kubandakanya namaziko okurisayikilisha, inkunkuma ye-elektroniki (i-E-Inkunkuma) yokuqokelela, okanye iindawo zokulahla ibhetri.
2. Iibhetri eziqokelelweyo zihlelwe kwaye zinqunywe zibe ngamaqhekeza amancinci okuqhubekeka.
3. Iibhetri emva koko zidluliselwa ngenkqubo ye-pyromestalgalgalical okanye ye-hydromestalfical ukuze izinto ezahlukeneyo zikhutshwe.Ukuba ufuna ukufunda okungakumbi ngenkqubo yezi nkqubo zimbini, ungabhekisa kwintshayelelo ye-Wikipedia