PC680 Battery - Comment on Autonomy.
 

It has become accepted as the norm... A PC680 battery will drain if the car is to sit longer than 1 or 2 weeks without a Battery Tender.

Despite this, I find this to be an amazing little battery. Here's why.

I've disconnected my PC680 5 months ago where it sat unused and uncharged.

Today, after connecting it, the engine turned over and started within 5 seconds.

Impressed.

DI

this is good news. im planning to get this battery for my v mount set up. which pc680 did you end up getting the one with or without the metal jacket?

there is no need for the battery with the metal jacket. BTW, the hawker battery tender costs a lot to run all the time.

thanks scrub. im opting for an odyssey pc680 right now.

same here. i have had one in almost a year, and the car has been sitting pretty much the whole time. the only time it every died was when i did forget to disconnect it. otherwise it hold up just fine.

I had 2 over 2 years. Mine never lasted for shite and both died a slow death as they kept going dead after days of non-use. In the cold winter weather it wouldn't last longer than 3 days. Summer would last 5-12 days.

hey al, do i have to buy the terminals also or do i just buy the battery?

I have a Hawker with the metal jacket and the terminals.

I used the jacket to make my own battery box. If you plan on relocating the battery, you can forego the terminals and simply screw down the cables eyering terminals right into the battery.

DI

i agree... this is my 2nd pc680 battery, and also the second one to completely die on me over the winter. So now its time for my 3rd. Maybe this time i will remember to disconnect it. Its a great little battery, but it doesnt like to sit in the cold...

the battery is needed for my a v mount so it will pretty much be in the same place

Ever think it could be something other then the battery causing it to drain?

-Dan

mine seems to hold charge fine
knock on the wood :)

Mine last for 3 weeks before it drains, I love it

I got mine about two weeks ago and love the little bastard.

Mine dies in 2 days of storage due to the CarPC i have connected to it. So I keep it plugged in to a Battery Tender Jr all the time. It's designed for AGM type battery. When the batt does drain to below the maintenance voltage, I hookup a different charger to bring it back to life. These again are designed for AGM type batt but can bring it to 14.6v to charge. I forgot what brand mine is but this new one can prolly do the job of both of mine: http://www.hrpworld.com/index.cfm?fo...action=product

I have both an odyssey and the Gruber batteries which are the same thing except the generic non-name brand version. They are half the price, at least when I bought it, since then they have raised the price. But the Gruber battery I have, I have had no problems at all, and my car sits sometimes for a week or two.

Also when I did my swap, having to crnak the motor to check things, the odyssey would die quickly. With the gruber, it lasted a while, and when it would get weak, a couple cranks and bam, starts right up.

Here's a link to the Gruber batteries. Same dimensions and specs, I paid about 40 shipped for mine. Another friend has had his Gruber for about 3 years no problems.

http://www.gruberpower.com/gruberpow...yclebatteries/

I used this battery when I went to a V-Mount, got tired of the battery constantly dying and dropped an Optima Red Top into the compartment behind the passenger seat. Still have the PC680 battery in my Silvia that was put in to make room for a larger intercooler, but am doing a battery relocate on that one soon. The PC680 is a decent batteries as long as you don't forget to keep it on a battery tender but nothing sucks more than when you are ready to go for a drive a realize you forgot to hook up the charger after the last drive.

where I work we use odyssey batteries in our sand rails. I got myself a 680 the other day for my battery relocation. My cost was 80 dollars with free terminals. I'm curious on how much everyone pays for these?

I use an Odyssey PC925 (slightly larger than a 680, but still fits in the rear bins). It has sat for weeks while connected in the car and has never died. I do not use any form of external charger.

In fact, the only time it died is when I left the lights on all day once.

Good to hear. I bought a 925 and have yet to use it. It is small enough to fit in one of the rear storage bins without cutting.

i have the 680....and let it sit for 4 months disconnected from the car...connected it andthe fd started right up....i've yet to have a problem with it...
i haven't had it that long either though... :)
i bought mine from batterymart.com

brad

Which one?

It would seem to me that these cars have a significant drain somewhere. I wonder if the factory security system is to blame? Or the computers all have a considerable drain to retain their settings? Either way, the FD seems slightly inefficient when it comes to battery power while being stored or sitting for a short time.

Which model of battery?

Same experience here. I had problems when I had an aftermarket keyless entry system installed. Once I pulled it I can leave the 7 parked for months and it fires right up. People that have problems with these batteries usually have small power drainage and don't take the time to figure out where it's coming from.

I've got the Odyssey PC1200 sitting in the storage bin...two weeks drained. had it recharged, so will be checking for a drain somewhere in the system.

From what the "battery experts" have told me, the ODyssey battery could sit for up to 2 years and still push out 1200cca so two weeks and going dead, means something is sucking it dry...

~CYD

I recently switched down from the PC 925 to the PC 680, and so far no issues. i let the car sit for three weeks after my last track event, and it started right up yesterday.

back from the dead, my pc925 seems to die every few days, how the heck would you start looking for a place that would drain the battery??

i have a pc680 that died when the car was shipped when i moved, maybe the moving company left the interior light on or something (it took 6 weeks for the car to arrive)

i would jump start the car but it wouldn't charge so everytime i shut down it had to be jump started again. I took the battery to autozone to have them recharge it but after an hour in the charger it was only showing 0.48V and they said it needed replacing.

i got sick of this and got a generic battery i had laying around and connected it in parallel kinda like a permanent jump start and drove the car like this for about a week.

the pc680 was relatively new so i was getting ready to send it in for warranty replacement but when i disconnected the other battery somehow the oddysey came back to life!

it's been 3 months or so and i dont drive the car too much but the oddysey now holds charge just fine! 2 weeks without driving and it starts right away! how did this happen?

I think its the one thats says pc680.

Use a volt meter that measures current draw. Hook it in series with the battery. Now pull fuses until you find the circuit that is drawing current. If you have hooked anything directly to the batter (stereo equip, lights, etc..) you will have to manually disconnect this stuff to test. Should be below 20 milliamps.

I've had this battery on my car for a few years now. Since, it's not my DD the battery used to drain/die quite often. I've replaced it three times over the past four years and was about to get a trickle charger, but FINALLY decided instead to get a full-size battery mounted in the trunk in addition to the PC680 in the engine bay. I was mainly having issues because of all the strain on the lil' battery i.e. aftermarket alarm, and my hi-wattage sound system.


If the battery is being used on a relatively stock car and is disconnected when the car's down, it's a great battery. Otherwise, it needs a little bit of help to be great.

PC 680 MJT

Did two years with this battery. Put about 2K miles on the car with it. Through all the issues I worked out with the car this battery held tough. I left the battery in the car over the two winters. Because I don't drive the car in the winter I would do a monthly start up to keep the motor lubricated. I did have to recharge the battery every time before start up. I think that with the combination of continuous cold and being drained and recharged led to its end. It doesn't even hold a charge now even being charged out of the car.

The Odyssesy can be deep discharged 400 times. BUT, and it's a big BUT---you must over charge it by 105 to 108%. A standard recharging by the alternator or a home charger only provides for 80-95% of the energy discharged. One example they give in the manual is that of the PC2150. You need 40 amps controlled to under 15 Volts in order to revive a deep discharged battery.

What you did was allowed for the 105-108% overcharging of the pc680 by hooking another battery in parallel. Enjoy.

^^^thanks! it still works perfectly btw :D