Trojan T-105 battery charging tips

[WotEver]

... I do believe you enjoy typing random stuff just to wind us up, easy for you because we care about fact and truth and you don't.

It's the difference between someone who Googles for specs (and guesses) against those who speak from real world experience.

[Graham.m]

because we care about fact and truth and you don't.

 

It's the difference between someone who Googles for specs (and guesses) against those who speak from real world experience.

 

 

I don't think you do, else you would have known that T105s arrive with only 70% capacity, that Trojan recommend a charging voltage of 14.8 and that is what you would be guiding people so they got the best out of the batteries not ignoring the specialists Trojan, engineers not salespeople. I find it interesting that your knowledge is so extensive about Trojan batteries you did not know those simple facts and fear someone who asked Trojan. The two of you cry is either he doesn't know or he googles. The art of being a good engineer is not to know it all but to know where to find it, check it and how to use the information.

 

As for real world experience I suspect I may have a bit more that either of you both at home and abroad

 

So for your benefit, BTW note he/she is an Engineer so will know what he/she is talking about

 

Facts anyone considering buying Trojan T105s should consider, they only arrive with 70 approx capacity, the recommended charging voltage is 14.8V the T105 takes of the order of 75 cycles to reach its advertised capacity arriving at 168Ah approx.

 

From: *******@trojanbattery.com

To: *********.com

Subject: Trojan Battery Contact

Date: **************

 

Hi,

Our T105 is rated at 225 amp hours. This is the 20 hour rating. The recommended charge voltage is 2.45 volts per cell or 14.8 volts for a 12 volt system. It takes about 75 cycles for our flooded batteries to reach their peak performance (capacity) but brand new batteries should provide around 70% of their peak capacity. For the T105, 70% of peak is about 168 amp hours.

 

Please let me know if you have other questions.

 

Have a Happy New Year,

 

***************

Technical Support Engineer

Trojan Battery Company

Perhaps you should look at this document rather than relying on a line or two from a salesman. http://www.trojanbattery.com/pdf/TrojanBattery_UsersGuide.pdf

 

Anyway, do you have any evidence at all for what you are saying, or are you just making it up as usual? The only consequence of a slightly high mid-point charging voltage will be a slight increase in water usage, and anyway as I said earlier these voltages are all subject to a temperature co-efficient and thus the voltage needs to be significant higher for cold batteries. 15.1v at say 5C is equivalent to less than 14.7v at the nominal temperature.

 

Are you willing to guarantee to every member of the forum your advice and pay for replacement batteries on failure?

Edited January 1, 2016 by Graham.m

[WotEver]

Are you willing to guarantee to every member of the forum your advice and pay for replacement batteries on failure?

Yet more baseless scaremongering.

 

As for the rest of your repetitious rant, it wasn't worth the effort to respond to the first time you wrote it. Repeating it makes it no less tedious and irrelevant.

 

Tony

[Loafer]

 

 

 

I don't think you do, else you would have known that T105s arrive with only 70% capacity, that Trojan recommend a charging voltage of 14.8 and that is what you would be guiding people so they got the best out of the batteries not ignoring the specialists Trojan, engineers not salespeople. I find it interesting that your knowledge is so extensive about Trojan batteries you did not know those simple facts and fear someone who asked Trojan. The two of you cry is either he doesn't know or he googles. The art of being a good engineer is not to know it all but to know where to find it, check it and how to use the information.

 

As for real world experience I suspect I may have a bit more that either of you both at home and abroad

 

So for your benefit, BTW note he/she is an Engineer so will know what he/she is talking about

 

Facts anyone considering buying Trojan T105s should consider, they only arrive with 70 approx capacity, the recommended charging voltage is 14.8V the T105 takes of the order of 75 cycles to reach its advertised capacity arriving at 168Ah approx.

 

From: *******@trojanbattery.com

To: *********.com

Subject: Trojan Battery Contact

Date: **************

 

Hi,

Our T105 is rated at 225 amp hours. This is the 20 hour rating. The recommended charge voltage is 2.45 volts per cell or 14.8 volts for a 12 volt system. It takes about 75 cycles for our flooded batteries to reach their peak performance (capacity) but brand new batteries should provide around 70% of their peak capacity. For the T105, 70% of peak is about 168 amp hours.

 

Please let me know if you have other questions.

 

Have a Happy New Year,

 

***************

Technical Support Engineer

Trojan Battery Company

 

Are you willing to guarantee to every member of the forum your advice and pay for replacement batteries on failure?

 

Sure. That's just a generic statement to cater for users in a normal environment. There is no way that a live aboard off-grid navigator can keep to such guidelines. No warranty from any battery manufacturer will be upheld once it is discovered that the user lives on a boat and has continually abused them.

 

Get a grip on yourself, man. It works, and isn't even over-charging.

[Graham.m]

Yet more baseless scaremongering.

 

As for the rest of your repetitious rant, it wasn't worth the effort to respond to the first time you wrote it. Repeating it makes it no less tedious and irrelevant.

 

Tony

 

Lets put it this way, you put yourselves forward as experts on the subject, competent people, people who should know and therefore accept liability for what you write/say even if you do not get paid.

 

So you won't guarantee your advice then?

Edited January 1, 2016 by Graham.m

[ditchcrawler]

What bank capacity, d.c.?

4 X 105 in series to give 24 volts(nominal)

[Graham.m]

 

Sure. That's just a generic statement to cater for users in a normal environment. There is no way that a live aboard off-grid navigator can keep to such guidelines. No warranty from any battery manufacturer will be upheld once it is discovered that the user lives on a boat and has continually abused them.

 

Get a grip on yourself, man. It works, and isn't even over-charging.

 

Ah so you are admitting your advice is abuse of the batteries. As for liveaboards, I would say rot, these batteries are used all over the world in off grid systems and I suspect that Trojan honour its warranty claims else I suspect there would be trace on the net.

 

As to a liveaboard keeping to the guidelines I suspect you are wrong I know several who do keep to such guidelines and their batteries live well.

[Loafer]

4 X 105 in series to give 24 volts(nominal)

 

Your 2A is about fully charged then, into 225Ah, at 1%. Sounds good!

[ditchcrawler]

I get my batteries from 'Shield' their factory and shop is just up the road from me. I ask for a dry charged one and watch them fill it, I then trickle charge for hours before installing and putting them into service.

I have used them in the passed, the first ones I got a good deal, the next time I went it took a week to rechage the wallet never mine the batteries.

[ditchcrawler]

 

Your 2A is about fully charged then, into 225Ah, at 1%. Sounds good!

And they have been abused, at about 4 years old they got quite low on water, I can't say how low as you cant see once they are below the plates. Even if they die tonight I would buy another set of Trojans.

[fretman]

Just about to renew my U.S 6 volt X 8, batteries, fitted them in February 2007, and used for 6 months in the summer every year since, and on a Stirling mains charger in the winters.

 

Will be replacing them with the same,, why change.

[Graham.m]

Just about to renew my U.S 6 volt X 8, batteries, fitted them in February 2007, and used for 6 months in the summer every year since, and on a Stirling mains charger in the winters.

 

Will be replacing them with the same,, why change.

 

No reason at all and it sounds as if you looked after them

[Loafer]

 

 

Our T105 is rated at 225 amp hours. This is the 20 hour rating. The recommended charge voltage is 2.45 volts per cell or 14.8 volts for a 12 volt system. It takes about 75 cycles for our flooded batteries to reach their peak performance (capacity) but brand new batteries should provide around 70% of their peak capacity. For the T105, 70% of peak is about 168 amp hours.

 

Please let me know if you have other questions.

 

Have a Happy New Year,

 

***************

Technical Support Engineer

Trojan Battery Company

 

Are you willing to guarantee to every member of the forum your advice and pay for replacement batteries on failure?

 

Does anyone?

 

15.1V is perfectly within Trojan's published graphs. My use of the term 'abuse' refers to the way that offline liveaboards cycle their batteries, setting their own compromises between battery longevity and petrol costs.

 

I therefore consider that I DON'T abuse my Trojan batteries, I simply am not able to follow the so-called 'recommended' charging regime - but they are charged quicker and at less cost, and have grown in capacity over the last 12 months.

 

NOTE They are never charged outside of Trojan's own charging curves!

 

 

Now just shut the f*** up.

Edited January 1, 2016 by Loafer

[cuthound]

In my experience battery manufacturers will only honour their warranty if you can demonstrate a manufacturing fault.

[Graham.m]

In my experience battery manufacturers will only honour their warranty if you can demonstrate a manufacturing fault.

I have had batteries replaced under warranty.

[cuthound]

I have had batteries replaced under warranty.

We're they suffering from a manufacturing fault?

[bizzard]

Candle now blown out, 2 LED lights now on, pump ran for 3 seconds to make tea, washing out on the line. Voltmeater now at 12.7 and steady.

[ditchcrawler]

Candle now blown out, 2 LED lights now on, pump ran for 3 seconds to make tea, washing out on the line. Voltmeater now at 12.7 and steady.

Just how old is that pp3 battery in that meater?

Edit for spelling flesh

Edited January 1, 2016 by ditchcrawler

[WotEver]

Let's have some fun...

 

1. What is the lowest voltage at which a fully charged Lead Acid battery will gas. (Clue: Graham has already demonstrated that he doesn't know).

 

2. Why do knackered lead acid batteries have the same fully charged voltage as new batteries? (This one is easy)

 

3. Why does a lead acid battery's voltage decrease as it discharges? (This one sounds obvious but It isn't. Trust me).

 

Answers on a postcard please...

 

Tony ?

 

ETA Once you consider the answer to 2 you realise why 3 is actually very confusing.

Edited January 1, 2016 by WotEver

[bizzard]

Just how old is that pp3 battery in that meter?

Its not a multi meter, its just a beautiful little £3 digital volts gauge with nice blue digits display on which I've put a plug and its permanently plugged it into a 12v cabin socket. My multimeter does confirm its readings.

[WotEver]

.

Edited January 1, 2016 by WotEver

[nicknorman]

 

 

I don't think you do, else you would have known that T105s arrive with only 70% capacity, that Trojan recommend a charging voltage of 14.8 and that is what you would be guiding people so they got the best out of the batteries not ignoring the specialists Trojan, engineers not salespeople. I find it interesting that your knowledge is so extensive about Trojan batteries you did not know those simple facts and fear someone who asked Trojan. The two of you cry is either he doesn't know or he googles. The art of being a good engineer is not to know it all but to know where to find it, check it and how to use the information.

 

Perhaps you should have a change of paradigm and actually consider reading the thread to which you are responding? Then you would have noticed that a number of us have repeatedly said that Trojans are well down on capacity when new. This is also mentioned in the Trojan Battery user guide that you clearly have never read despite pretending to be an expert on the matter. Perhaps you should consider whether the "engineer" (probably not as he has better things to do than answer silly questions from customers) really meant 70% as opposed to 69% or 71%, or whether he plucked a number out of the air "around 70%". I suggest the latter, which would be in accordance with that commodity that you lack, that being the real world experience of several of us one here ie having new Trojans.

 

As for real world experience I suspect I may have a bit more that either of you both at home and abroad. With fantasy role play, yes you're probably right. But clearly zero with using Trojan batteries.

 

So for your benefit, BTW note he/she is an Engineer so will know what he/she is talking about. Did he go to the same engineering school as you by any chance?

 

Facts anyone considering buying Trojan T105s should consider, they only arrive with 70 approx capacity, the recommended charging voltage is 14.8V the T105 takes of the order of 75 cycles to reach its advertised capacity arriving at 168Ah approx. Have you actually looked at the Trojan user guide to which I provided a link for you? Then you would see that a statement like "charge at 14.8v" is as overly simplistic as it is foolish, and these "revelations" you are claiming are covered in detail. Anyway why not get back to the "engineer" you were chatting to and suggest that they should dump their longstanding published user guide and replace it with your "engineer's" email or even your own expert tome full of wisdom?

 

Are you willing to guarantee to every member of the forum your advice and pay for replacement batteries on failure?

...

Please let me know if you have other questions.

 

In order to get a way with #### you have first to have credibility. Sorry but that is lacking.

[bizzard]

Let's have some fun...

 

1. What is the lowest voltage at which a fully charged Lead Acid battery will gas. (Clue: Graham has already demonstrated that he doesn't know).

 

2. Why do knackered lead acid batteries have the same fully charged voltage as new batteries? (This one is easy)

 

3. Why does a lead acid battery's voltage decrease as it discharges? (This one sounds obvious but It isn't. Trust me).

 

Answers on a postcard please...

 

Tony

Zero if you whack an inch thick steel bar across the posts. Done it loads of times to test for dud cells.

[WotEver]

Zero if you whack an inch thick steel bar across the posts. Done it loads of times to test for dud cells.

Well yeah, that's one valid answer ?

[Loafer]

Let's have some fun...

 

1. What is the lowest voltage at which a fully charged Lead Acid battery will gas. (Clue: Graham has already demonstrated that he doesn't know).

 

2. Why do knackered lead acid batteries have the same fully charged voltage as new batteries? (This one is easy)

 

3. Why does a lead acid battery's voltage decrease as it discharges? (This one sounds obvious but It isn't. Trust me).

 

Answers on a postcard please...

 

Tony

 

ETA Once you consider the answer to 2 you realise why 3 is actually very confusing.

 

1. 14.4?

 

2. The chemistry remains the same - just the capacity is reduced?

 

3. Volt drop across its own internal resistance?