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RobiStrom Član
Pridružen-a: Ned 01 Mar 2015 22:00 Prispevkov: 209 Aktiv.: 1.88 Kraj: Ljubljana
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Objavljeno: Pon Nov 13, 2017 3:23 pm Naslov sporočila: |
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Prejšnji teden sem menjal alternator na Opel Astri G, 1.7 DTI, Vgradil sem novega iz Rezervniavtodeli24 cena je bila 90€.
Takoj ob zagonu avtomobila je bila napetost na akumulatorja pod 11V. Potem sem ga pustil čez noč na polnilcu in naslednji dan je bila napetost pri polnjenju lepih 13,8V (13,7 pri prižganih lučeh)- očitno je bil prej tako prazen... _________________ LP Robi |
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barosa Član
Pridružen-a: Ned 18 Jul 2010 23:28 Prispevkov: 144 Aktiv.: 0.86 Kraj: Novo mesto
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Objavljeno: Čet Nov 23, 2017 11:49 am Naslov sporočila: |
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Update:
Merili smo se z profi testerjem aku in altenator. Akumulator ima se 490A zagonskega toka, od deklariranih 680, kar je cisto na meji. Za altenator je napisalo da je ok, pri visjih obratih in ob veliki porabi vse v mejah normale (13,5 - 13,8V).
Tester je napisal edino "zaznan površinski naboj". Pa nismo vedeli kaj točno to pomeni. |
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RobiStrom Član
Pridružen-a: Ned 01 Mar 2015 22:00 Prispevkov: 209 Aktiv.: 1.88 Kraj: Ljubljana
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Objavljeno: Čet Nov 23, 2017 2:20 pm Naslov sporočila: |
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Najbž je mišljeno tole:
4.3. Remove Surface Charge
Surface charge (or "counter voltage") is the uneven mixture of sulfuric acid and water along the surface of the plates as a result of charging or discharging as the electrolyte has an opportunity to diffuse in the pores of the plates. It will make a weak battery appear good or a good battery appear bad. Larger wet lead-acid batteries (especially over 100 amp hours) could also have electrolyte stratification where the concentration of acid is greater at the bottom of the cell than near the surface. The Open Circuit Voltage (OCV) will read higher than they actually are. Stratification can be eliminated by an equalizing charge, stirring or gently shaking the battery to mix the electrolyte.
A surface charge can be eliminated by one of the following methods after recharging a lead-acid battery:
Allow the car or deep cycle battery to sit (or rest) without discharge or charge for between two and eight hours at room temperature, if possible, to allow for the surface charge to dissipate. (Recommended method.)
For car batteries, turn the headlights on high beam for five minutes and then wait ten minutes.
For car batteries, apply a load with a battery load tester at one-half the battery's CCA rating for 15 seconds and then wait ten minutes.
For car batteries, disable the ignition, turn the engine over for 15 seconds with the starter motor, and wait ten minutes.
For deep cycle batteries, apply a load that is 33% of the amp-hour capacity for five minutes and then wait at least ten minutes.
vir: jgdarden.com _________________ LP Robi |
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