I found my new battery empty after 3 weeks without driving the car. Some electrician told me the car is taking too much current (0.14 Amps) with the key out of contact, he said should be maximum 0.05Amps. Toyota Rav4 2.0 VVT-i 2001. Thanks.
2007-09-07 01:30:34 · 5 answers · asked by cat 1 in Cars & Transportation ➔ Car Makes ➔ Toyota
Unfortunately, the math doesn't really apply when talking about battery draws. .14 amps, known in the business as 140 miliamps (mA), is WAY too high. .05 amps, or 50 miliamps is the MAXIMUM you want to see. A Rav4 shouldn't really be seeing more than about 35 mA. Amazingly, 100 mA will draw the battery down in short order, even though it doesn't "add up." Also correct is the idea that the most likely cause is an add on accessory...the cars rarely have draws without them. Also very important...You have to check that draw with a fully charged battery, as one with lower volts will show a higher amp reading, and one with higher volts will show a lower one... Ohm's law in practice. So be sure the charge in the battery is about 12.2V or your reading will be misleading. One other thing..Toyotas do not have "hot" power outlets, so anything plugged into one will not draw power with the key off. You will have to look for something wired directly. I have seen a lot of radios fail and cause a draw, so you might want to start there. Good Luck and God Bless.
2007-09-07 16:10:03 · answer #1 · answered by toyodave 4 · 2⤊ 0⤋
Typical Toyota alternators charge 14.3 -14.4 volts which too much in my book. It's not unusual to be required to add distilled water to the battery every year.
You say that your new battery is empty. Do you mean water / acid or voltage. A new fully charged battery should read a minimum of 12.5 volts. Perhaps you got a bad battery or the alternator is overcharging or not at all.
If the battery is dead there must be a short curcuit causing excessive amp draw.
2007-09-07 02:15:44 · answer #2 · answered by Country Boy 7 · 0⤊ 0⤋
Well, doing the math...
...a 200 amp-hour battery would take 1,428.6 hours to discharge at the rate of 0.14 amps/hr. 3 weeks (21 days) equals 504 hours. Your battery should have had about 1/3 of its charge left.
2007-09-07 01:41:08 · answer #3 · answered by onparadisebeach 5 · 0⤊ 0⤋
.05 is correct. we have found a few cell phone chargers (not even with the phone plugged in) that would discharge the battery over a few days. what (if any) aftermarket items do you have? radio/dvd player/phone stuff?
2007-09-07 02:40:34 · answer #4 · answered by chevy_man_rob 5 · 0⤊ 0⤋
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2016-10-04 03:38:45 · answer #5 · answered by teresa 4 · 0⤊ 0⤋