16 cell EVO2 battery 100-013

[ARtraveler]

:2thumbs: on your mods doc. :2thumbs:

 

[wyliec]

Doc is stiring the pot!!!!!

However I like the Idea of the two working off a single chargeing system.. Question is... Why the isolator ?

From my previous link:

"So why do you need a relay isolator to run two or more batteries? Isolators serve two purposes. First they allow a set amount of current to travel between the positive terminals of two or more batteries. So for instance if a system was set up with a relay isolator that is rated to handle 200 amps this means up to 200 amps of current is able to flow from one battery to another. Second, all batteries have a different potential voltage so this means if two batteries are connected together without using a relay isolator the batteries would actually drain each other until they are both completely discharged (two completely dead batteries). Since each battery would have a different potential voltage they would push and pull on each until there is no energy left. This is where the relay comes into play; the relay will ONLY connect the two batteries together when triggered to the “ON” position (while the car is running). So when the relay is switched “OFF” the batteries are disconnected and no energy will be flowing between them (when the car is off)."

 

[effgjamis]

From my previous link:

"So why do you need a relay isolator to run two or more batteries? Isolators serve two purposes. First they allow a set amount of current to travel between the positive terminals of two or more batteries. So for instance if a system was set up with a relay isolator that is rated to handle 200 amps this means up to 200 amps of current is able to flow from one battery to another. Second, all batteries have a different potential voltage so this means if two batteries are connected together without using a relay isolator the batteries would actually drain each other until they are both completely discharged (two completely dead batteries). Since each battery would have a different potential voltage they would push and pull on each until there is no energy left. This is where the relay comes into play; the relay will ONLY connect the two batteries together when triggered to the “ON” position (while the car is running). So when the relay is switched “OFF” the batteries are disconnected and no energy will be flowing between them (when the car is off)."

Thanks..... But.... will the existing charge system ( spyder ) keep both battries in charge condition?
I can under stand the off position when charging system is in off condition, however, I have a golf cart with 6 *8 volt ( 48 volt system, one positive, one negative, with all the rest + to - . I assume this is a series conection and therefore not applicable to this discussion.

What is absolutely safe and neccessary for two batteries, the same, installed? Still a isolator and switch?

 

[NancysToy]

Connecting them in parallel, through an isolator, should do it. The specific wiring instructions should be included with the isolator. Your extra accessories should be wired to feed from the auxiliary battery, with the main battery feeding only the standard vehicle wiring, starter, lights, steering, etc. That stuff is hard to separate from the main battery anyway. The isolator will not only prevent the batteries from discharging to each other, but it will prevent the auxiliary loads from draining the main battery, and it will allow the main battery to be charged first when underway.

 

[Boyd2010RT]

diesel pickup batteries question

Do diesel pickup trucks with two 12V batteries in parallel have an isolator? - have seen many, but never looked for or saw an isolator.

 

[docdoru]

Do diesel pickup trucks with two 12V batteries in parallel have an isolator? - have seen many, but never looked for or saw an isolator.

Run independend (VW Touareg 2008 V6 and V8).

 

[NancysToy]

Do diesel pickup trucks with two 12V batteries in parallel have an isolator? - have seen many, but never looked for or saw an isolator.

The diesels I have seen that have dual batteries, run them in series for double the voltage. That works differently. Some emergency vehicles, like fire trucks and police vehicles, have dual systems in parallel. Those I have seen use an isolator.

 

[NancysToy]

My Dodge Cummins diesel has a dual battery, 12 volt system. There is no isolater that I am aware of. The engine has an intake grid heater that draws a substantial load when cold starting. Dual batteries provide sufficient power for that, fuel pumps, and starter operation on an high compression engine.

Dual batteries on a Spyder don't strike me as worthwhile unless someone were using substantial amounts of electrics when the engine is not running or just idling. When running at operating rpm's, the charging system provides maximum wattage. If you exceed that amount with accessories, another parallel battery only affords a little more time to do that. If the draw exceeds the supply, 20 batteries won't do any good, the well will run dry. The Spyder charging system provides more than enough power to supply a reasonable amount of accessories.

If powering accessories (lights, audio, etc) when the Spyder is not running, an isolated, second battery for those items does seem logical. That should function much like a camper or boat trolling motor battery, supplying power to just those items, while leaving the Spyder's original battery fully charged to operate the fuel pump and starter when it's time to restart the engine.

Thanks for the lesson on modern small diesel trucks. As you can tell, my experience has been limited to larger semi tractor and diesel generator units, all 24 volt, and nothing modern at that.

I agree wholeheartedly on the limited benefit of dual batteries on a Spyder. As you said, all the second battery does is buy time if you exceed the charging system output. Police vehicles use two batteries, so they can run all the lights, radio, etc., for extended periods when idling. The benefits to a Spyder would be similar. Folks wanting to run a light show with accessory lighting for hours at a bike show with the Spyder not running, could gain something, as might people that ride in parades a lot...with extra electrical accessories. Other owners are not likely to do anything but add to the complexity of their Spyders, and spend some extra money.

 

[boborgera]

Lamount had put a second battery behind the oil tank on one of his earlier Spyders, I don't remember what the outcome was.:dontknow:

 

[docdoru]

Lamount had put a second battery behind the oil tank on one of his earlier Spyders, I don't remember what the outcome was.:dontknow:

Pathology exam @ brp. :shocked:

 

[dave01]

. Folks wanting to run a light show with accessory lighting for hours at a bike show with the Spyder not running, could gain something, as might people that ride in parades a lot...with extra electrical accessories. Other owners are not likely to do anything but add to the complexity of their Spyders, and spend some extra money.

I would just like to have a spyder that keeps the normal battery charged. LOL

 

[reggystan]

Lithium IRON not Ion

I've been testing this battery since summer time, Lithium Iron battery made by Shorai. It is a Lithium Iron NOT Ion.

• Holds charge for one year without maintenance
• Twice the service life of lead-acid batteries on average
• Drop-in replacement for your OEM battery
• Military spec Carbon Composite Case
• Faster cranking for better starts

• Ultra light. One fifth the weight of lead-acid batteries on average
• Super-fast recharge rate
• SAFE - No explosive gasses during charge, no lead, no acid
• Environmentally friendly
• Japanese engineering

 

[NancysToy]

The EVO2 is an Li-Fe battery, too.

 

[1VENOM]

Something like this? http://www.batterystuff.com/batteries/motorcycle/can-am/2008/

 

[docdoru]

The EVO2 is an Li-Fe battery, too.

:agree:

Something like this? http://www.batterystuff.com/batteries/motorcycle/can-am/2008/

Made in China.

 

[bruiser]

Thanks..... But.... will the existing charge system ( spyder ) keep both battries in charge condition?
I can under stand the off position when charging system is in off condition, however, I have a golf cart with 6 *8 volt ( 48 volt system, one positive, one negative, with all the rest + to - . I assume this is a series conection and therefore not applicable to this discussion.

What is absolutely safe and neccessary for two batteries, the same, installed? Still a isolator and switch?

Yes,they're wired in series and don't use an isolator. They're also deep cell and require a deep cell charger.

 

[bruiser]

We use a 12V LI in some of our small machines. It uses a monitoring system for dicharging and charging. good system when it works correctly.

 

[docdoru]

No room for the second battery:

 

[zrc]

Awww. Sad Panda!

 

[1551retired]

The diesels I have seen that have dual batteries, run them in series for double the voltage. That works differently. Some emergency vehicles, like fire trucks and police vehicles, have dual systems in parallel. Those I have seen use an isolator.

I have dual 12 volt batteries in parallel with no isolation in my Cat powered diesel motorcoach. That's the way they are built at Freightliner Custom Chassis.