Nissan Car Lounge - Almera, Juke, Latio, Qashqai, Sylphy, Teana Owners > Latio
Do I need to change car battery if my battery is still working fine after 2 yrs?
hammer99:
--- Quote from: totallypatrick on May 25, 2009, 07:44:41 AM ---I saw the portable jump start selling in other forums for $138 but that is the price of a new battery. Might as well change to a new battery or its more beneficial to carry a jump start along? As for those maintenance battery, does it die all of a sudden or give signs like difficulties in starting before it goes dead? I've a volt meter in my car and it still shows 13+ to 14 when engine is running.
--- End quote ---
Correct me if I'm wrong, a flat battery when measure the voltmeter (between +ve and -ve) still shows readings between +12 to +16V. It is the ampere (current) that matters right ??
spyder_696:
--- Quote from: hammer99 on June 03, 2009, 11:02:21 AM ---Correct me if I'm wrong, a flat battery when measure the voltmeter (between +ve and -ve) still shows readings between +12 to +16V. It is the ampere (current) that matters right ??
--- End quote ---
yup, its the amp that drives the battery... but low voltage also equal low amp right... i return all to teacher le... hee...
nxgadgets:
--- Quote from: hammer99 on June 03, 2009, 11:02:21 AM ---Correct me if I'm wrong, a flat battery when measure the voltmeter (between +ve and -ve) still shows readings between +12 to +16V. It is the ampere (current) that matters right ??
--- End quote ---
The term "flat battery" usually means low voltage. Meaning voltmeter reads 11+ volts then mechanic usually will tell you battery flat, need to change.
Low volt on battery means it is "flat", but does not mean the battery needs to be changed. Sometimes just get the mechanic to change it for you and it can still be used. For eg, if you go overseas for 2~3 weeks, the battery may go flat as there is no charging for that period.
The critical thing is cranking ability of the battery. A battery with normal readings on the voltmeter does not necessarily mean it can provide the ampere to crank the engine. That's why a lot of us get stranded in the carpark. The battery volt reading is normal but we just can't crank the engine.
The Battery Bug monitors the cranking ability in terms of %. When it detects that the cranking ability falls below 10%, it will sound an alarm after you turn off the engine. This prevents you from driving the car around with an alarm ringing all the way.
When the alarm goes off, you can still continue driving for a few weeks but would need to start looking for the best deal to replace your battery as soon as possible as the battery would not be able to crank your engine soon.
You can read more by downloading this brochure below.
http://www.argusanalyzers.com/fileadmin/user_upload/support/monitors/Literature/BatteryBug_brochure.pdf
totallypatrick:
--- Quote from: nxgadgets on June 04, 2009, 09:08:40 AM ---The term "flat battery" usually means low voltage. Meaning voltmeter reads 11+ volts then mechanic usually will tell you battery flat, need to change.
Low volt on battery means it is "flat", but does not mean the battery needs to be changed. Sometimes just get the mechanic to change it for you and it can still be used. For eg, if you go overseas for 2~3 weeks, the battery may go flat as there is no charging for that period.
The critical thing is cranking ability of the battery. A battery with normal readings on the voltmeter does not necessarily mean it can provide the ampere to crank the engine. That's why a lot of us get stranded in the carpark. The battery volt reading is normal but we just can't crank the engine.
The Battery Bug monitors the cranking ability in terms of %. When it detects that the cranking ability falls below 10%, it will sound an alarm after you turn off the engine. This prevents you from driving the car around with an alarm ringing all the way.
When the alarm goes off, you can still continue driving for a few weeks but would need to start looking for the best deal to replace your battery as soon as possible as the battery would not be able to crank your engine soon.
You can read more by downloading this brochure below.
http://www.argusanalyzers.com/fileadmin/user_upload/support/monitors/Literature/BatteryBug_brochure.pdf
--- End quote ---
Thanx for the detailed explaination. What is a recommended MF battery ? Amaron, Panasonic?
nxgadgets:
From what I heard from my customers, their experience with MF batteries wasn't very good. Most commonly, they found that MF batteries would fail suddenly. Some did not even last 6 months. That's based on their feedback, not my experience though.
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