Welcome Guest ( Log In | Register )

205 Pages « < 62 63 64 65 66 > » Bottom

Outline · [ Standard ] · Linear+

 Battery brand that has lasted 4 years or more.

views
     
TSRoman Catholic
post Feb 3 2021, 06:44 PM

Look at all my stars!!
*******
Senior Member
3,030 posts

Joined: Feb 2017
QUOTE(dwRK @ Feb 3 2021, 06:25 PM)
can pump out 5A does not mean it must or will at all times...

usually it starts maxed out...then auto switch to trickle charging...

smart chargers will have proper v/a parameters for the fast & trickle phases
*
Surely this external charger would have a selection of various charging algorithms for the different battery construction types and I presume that wkc5657 would have selected the appropriate charging algorithm for his battery.

This post has been edited by Roman Catholic: Feb 3 2021, 06:52 PM
dwRK
post Feb 3 2021, 07:13 PM

the consummate chartist
*******
Senior Member
5,118 posts

Joined: Jun 2006


QUOTE(Roman Catholic @ Feb 3 2021, 06:44 PM)
Surely this external charger would have a selection of various charging algorithms for the different battery construction types and I presume that wkc5657 would have selected the appropriate charging algorithm for his battery.
*
yes... unless it got tricked into not switching to trickle... or faulty... or both...

anyways his batteries all lasts only 2 yrs... maybe something else is at work... hmmm.... wkc5657 you been charging all your batteries?
alexei
post Feb 4 2021, 09:07 AM

Biker Mice from Mars
******
Senior Member
1,709 posts

Joined: Jan 2003
From: Medan, ID
My bike AGM - 12.1~12.2V. (65% SOC)
Charged within less than 10 minutes, 14.4V.
Switched off voltage - 12.8V.
Overnight voltage - 12.4~12.5V. (80% SOC)

QUOTE(dwRK @ Feb 3 2021, 06:10 PM)
my agm after 2-3 wks not used... 12.2v
car idling now charging at... 15.15v
after 1hr and engine stop... 15.15 -> 12.8v

my new spare mf last charged in December... 12.7v

my 3-months dead & revived 3+ years after 4hr rest... 12.7v

everything looking good
*
May I know what car? Do you modify anything to charge at 15.15V? It's measured at battery terminal?

QUOTE(dwRK @ Feb 3 2021, 06:25 PM)
can pump out 5A does not mean it must or will at all times...

usually it starts maxed out...then auto switch to trickle charging...

smart chargers will have proper v/a parameters for the fast & trickle phases
*
5A is not capable of doing fast charging. The CTEK he mentioned has AGM mode. He charged it once a month.

Just sharing what I understand, AGM charging mode requires constant voltage with max current clipped at 20% of C (20% of 100A = 20A). The CTEK from this standpoint is very safe, since it will never reach the max charging current, but the issue is charge time. It will take more than 4x time to complete the 'bulk' and 'absorption' stage. Another issue is, CTEK may have a safety cut-off, when the duration of charging is limited, and switched to the next charging phase. This safety causes the AGM to charge inappropriately.

Another problem with all-in-one chargers, is that it should require a bigger power supply to meet the max current. For example, the CTEK specifies 5A, so it should have a power supply capable of supplying more than 5A. Otherwise, the power supply itself will keep 'clipping'.

From what I read, if I want to charge my 65Ah MF, or a 65Ah AGM, I would need to buy a charger capable of 6.5A or 13A charging, respectively. Moreover, best practice for AGM is a following float charge for at least 6 hours before disconnecting the charger to complete the last 5% top off, once every 6 months.
dwRK
post Feb 4 2021, 10:40 AM

the consummate chartist
*******
Senior Member
5,118 posts

Joined: Jun 2006


QUOTE(dwRK @ Feb 3 2021, 06:10 PM)
my agm after 2-3 wks not used... 12.2v
car idling now charging at... 15.15v
after 1hr and engine stop... 15.15 -> 12.8v

my new spare mf last charged in December... 12.7v

my 3-months dead & revived 3+ years after 4hr rest... 12.7v

everything looking good
*
12.48v after overnight
yhsiau
post Feb 4 2021, 11:49 AM

Enthusiast
*****
Senior Member
790 posts

Joined: Apr 2005
From: "siew bao" town


QUOTE(alexei @ Feb 4 2021, 09:07 AM)
My bike AGM - 12.1~12.2V. (65% SOC)
Charged within less than 10 minutes, 14.4V.
Switched off voltage - 12.8V.
Overnight voltage - 12.4~12.5V. (80% SOC)
May I know what car? Do you modify anything to charge at 15.15V? It's measured at battery terminal?
5A is not capable of doing fast charging. The CTEK he mentioned has AGM mode. He charged it once a month.

Just sharing what I understand, AGM charging mode requires constant voltage with max current clipped at 20% of C (20% of 100A = 20A). The CTEK from this standpoint is very safe, since it will never reach the max charging current, but the issue is charge time. It will take more than 4x time to complete the 'bulk' and 'absorption' stage. Another issue is, CTEK may have a safety cut-off, when the duration of charging is limited, and switched to the next charging phase. This safety causes the AGM to charge inappropriately.

Another problem with all-in-one chargers, is that it should require a bigger power supply to meet the max current. For example, the CTEK specifies 5A, so it should have a power supply capable of supplying more than 5A. Otherwise, the power supply itself will keep 'clipping'.

From what I read, if I want to charge my 65Ah MF, or a 65Ah AGM, I would need to buy a charger capable of 6.5A or 13A charging, respectively. Moreover, best practice for AGM is a following float charge for at least 6 hours before disconnecting the charger to complete the last 5% top off, once every 6 months.
*
The boost charger can solve your problem.. it can do 12v 50a(max).


dwRK
post Feb 4 2021, 12:11 PM

the consummate chartist
*******
Senior Member
5,118 posts

Joined: Jun 2006


QUOTE(alexei @ Feb 4 2021, 09:07 AM)
My bike AGM - 12.1~12.2V. (65% SOC)
Charged within less than 10 minutes, 14.4V.
Switched off voltage - 12.8V.
Overnight voltage - 12.4~12.5V. (80% SOC)
May I know what car? Do you modify anything to charge at 15.15V? It's measured at battery terminal?

5A is not capable of doing fast charging. The CTEK he mentioned has AGM mode. He charged it once a month.

Just sharing what I understand, AGM charging mode requires constant voltage with max current clipped at 20% of C (20% of 100A = 20A). The CTEK from this standpoint is very safe, since it will never reach the max charging current, but the issue is charge time. It will take more than 4x time to complete the 'bulk' and 'absorption' stage. Another issue is, CTEK may have a safety cut-off, when the duration of charging is limited, and switched to the next charging phase. This safety causes the AGM to charge inappropriately.

Another problem with all-in-one chargers, is that it should require a bigger power supply to meet the max current. For example, the CTEK specifies 5A, so it should have a power supply capable of supplying more than 5A. Otherwise, the power supply itself will keep 'clipping'.

From what I read, if I want to charge my 65Ah MF, or a 65Ah AGM, I would need to buy a charger capable of 6.5A or 13A charging, respectively. Moreover, best practice for AGM is a following float charge for at least 6 hours before disconnecting the charger to complete the last 5% top off, once every 6 months.
*
bmw agm din80... no mods... 15.15 handheld at the battery... 15.1 obd car reading and obd unit

imho... no need fast charging ah... we not in business charging batteries from flat... usually just topping or trickle, so 5A is plenty... i revived my dead MF using dumb 2A charger but i purposely overcharge it at high voltage and temp...
alexei
post Feb 4 2021, 04:13 PM

Biker Mice from Mars
******
Senior Member
1,709 posts

Joined: Jan 2003
From: Medan, ID
QUOTE(dwRK @ Feb 4 2021, 12:11 PM)
bmw agm din80... no mods... 15.15 handheld at the battery... 15.1 obd car reading and obd unit
*
This BMW only take AGM or silver batteries then?
dwRK
post Feb 4 2021, 04:17 PM

the consummate chartist
*******
Senior Member
5,118 posts

Joined: Jun 2006


QUOTE(alexei @ Feb 4 2021, 04:13 PM)
This BMW only take AGM or silver batteries then?
*
I think can take efb also... but need to change the charging parameters

Will try efb next time
alexei
post Feb 4 2021, 05:13 PM

Biker Mice from Mars
******
Senior Member
1,709 posts

Joined: Jan 2003
From: Medan, ID
QUOTE(dwRK @ Feb 4 2021, 04:17 PM)
I think can take efb also... but need to change the charging parameters

Will try efb next time
*
can change charging parameter in the car???? wow...
dwRK
post Feb 4 2021, 06:41 PM

the consummate chartist
*******
Senior Member
5,118 posts

Joined: Jun 2006


QUOTE(alexei @ Feb 4 2021, 05:13 PM)
can change charging parameter in the car???? wow...
*
supposedly when you change new battery, you're supposed to "register" it with the ecu, tell it what type n capacity... and ecu will track charging cycles as well as adjust charging as the battery ages

that's what I read here n there... I haven't seen how it's done yet so don't believe everything I say... biggrin.gif
TSRoman Catholic
post Feb 4 2021, 06:46 PM

Look at all my stars!!
*******
Senior Member
3,030 posts

Joined: Feb 2017
QUOTE(dwRK @ Feb 4 2021, 06:41 PM)
supposedly when you change new battery, you're supposed to "register" it with the ecu, tell it what type n capacity...  and ecu will track charging cycles as well as adjust charging as the battery ages

that's what I read here n there... I haven't seen how it's done yet so don't believe everything I say... biggrin.gif
*
Just ask the Service Center how it is done. Better still follow and observe how it is done. 😊
dwRK
post Feb 4 2021, 07:34 PM

the consummate chartist
*******
Senior Member
5,118 posts

Joined: Jun 2006


QUOTE(Roman Catholic @ Feb 4 2021, 06:46 PM)
Just ask the Service Center how it is done. Better still follow and observe how it is done. 😊
*
nowadays SC don't allow people wander around look see look see... you drop the car off, can only sit at the lounge enjoy nasi lemak & latte...
TSRoman Catholic
post Feb 4 2021, 08:01 PM

Look at all my stars!!
*******
Senior Member
3,030 posts

Joined: Feb 2017
QUOTE(dwRK @ Feb 4 2021, 07:34 PM)
nowadays SC don't allow people wander around look see look see...  you drop the car off, can only sit at the lounge enjoy nasi lemak & latte...
*
We know that the work area is a dangerous place and it is not that we like to wander around the work area either but if a specific request cannot be accommodated for the owner to observe how it is done, I will take my business else where. I have no problems with that.


This post has been edited by Roman Catholic: Feb 4 2021, 08:11 PM
alexei
post Feb 4 2021, 08:21 PM

Biker Mice from Mars
******
Senior Member
1,709 posts

Joined: Jan 2003
From: Medan, ID
QUOTE(dwRK @ Feb 4 2021, 07:34 PM)
nowadays SC don't allow people wander around look see look see...  you drop the car off, can only sit at the lounge enjoy nasi lemak & latte...
*
Thanks for the info. I think SleeplessEyes mentioned BMW IBS.
Then, you mentioned programming new battery and stuff, so I found this: Bimmertips.

This is so cool, yet painful if ever kena flat battery.
dwRK
post Feb 4 2021, 08:46 PM

the consummate chartist
*******
Senior Member
5,118 posts

Joined: Jun 2006


QUOTE(alexei @ Feb 4 2021, 08:21 PM)
Thanks for the info. I think SleeplessEyes mentioned BMW IBS.
Then, you mentioned programming new battery and stuff, so I found this: Bimmertips.

This is so cool, yet painful if ever kena flat battery.
*
yup. anyways car will throw some error code 6-8 months ahead of time... lol... so won't end up with a surprised flat...

I think I accidentally abused mine, died just shy of 5 yrs... so free warranty replacement...

This post has been edited by dwRK: Feb 4 2021, 08:47 PM
alexei
post Feb 4 2021, 09:23 PM

Biker Mice from Mars
******
Senior Member
1,709 posts

Joined: Jan 2003
From: Medan, ID
QUOTE(dwRK @ Feb 4 2021, 08:46 PM)
yup. anyways car will throw some error code 6-8 months ahead of time... lol... so won't end up with a surprised flat...

I think I accidentally abused mine, died just shy of 5 yrs... so free warranty replacement...
*
IBS is amazing.
TSRoman Catholic
post Feb 4 2021, 09:35 PM

Look at all my stars!!
*******
Senior Member
3,030 posts

Joined: Feb 2017
QUOTE(alexei @ Feb 4 2021, 08:21 PM)
Thanks for the info. I think SleeplessEyes mentioned BMW IBS.
Then, you mentioned programming new battery and stuff, so I found this: Bimmertips.

This is so cool, yet painful if ever kena flat battery.
*
Great article. If that day should come that all car manufacturers are required to install IBS in their vehicles I will stop buying a new vehicle then.

Current systems in other car manufacturers is good enough. All that is required is to run the battery conductance and the appropriate electrical charging system tests. Thats all.


raymondemc
post Feb 4 2021, 09:38 PM

New Member
*
Newbie
9 posts

Joined: May 2007


So far experience 3y++, during that period always drive long distance.............
TSRoman Catholic
post Feb 4 2021, 09:39 PM

Look at all my stars!!
*******
Senior Member
3,030 posts

Joined: Feb 2017
QUOTE(dwRK @ Feb 4 2021, 08:46 PM)
yup. anyways car will throw some error code 6-8 months ahead of time... lol... so won't end up with a surprised flat...

I think I accidentally abused mine, died just shy of 5 yrs... so free warranty replacement...
*
Some cars I believe already have this early warning system wherein the battery icon will light up showing a weakening battery. Now that is very good system IMO for all car manufacturers to install. I think its available in the Teana if I am not mistaken.

This post has been edited by Roman Catholic: Feb 4 2021, 09:41 PM
adri4n
post Feb 4 2021, 09:47 PM

Running in Circles... Going No Where
******
Senior Member
1,846 posts

Joined: Jan 2003


BANNER agm battery .. last me 6 years.. but the darn thing cost 1k

This post has been edited by adri4n: Feb 4 2021, 09:48 PM

205 Pages « < 62 63 64 65 66 > » Top
 

Change to:
| Lo-Fi Version
0.0223sec    0.28    6 queries    GZIP Disabled
Time is now: 29th March 2024 - 04:29 PM