Battery Choices and Information - Page 15 - LotusTalk - The Lotus Cars Community

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post #281 of 305 (permalink) Old 11-26-2015, 08:10 AM
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Originally Posted by aburastar View Post
Can you share more experiences? how many days it lasts and still able to effortlessly cranks and stars the car? experiencing any heat after/during driving (being charged by car's alternator)?

I read your other thread - some gentlemen commented it may lack of charging/discharging protection circuit and could either prematurely damage the battery or cause fire/explosion (via non-regulated charging from alternator or over discharging). I mean this Battery tender made Li-Iron battery is soooooo light and cheap (compares to those listed in this thread)... we ElIGE owners shall jump all over to grab one - if there is no concern of battery causing fire / explosion

Who can get a confirmation from Battery Tender that this series of battery can be used in 4-wheel autos?
I have had no problems, and I do not know how many starts it will take before failure since I do not let it go to that level as it will damage the battery. I have a cut off switch and I use it when I won't be using the car in a while. The "fire" concerns are from lithium ion, not lithium iron, which is why I tried to nip the misunderstanding at the bud, but obviously I was unsuccessful. Actually there are lotus users of liFePO4 batteries, and yes I am surprised there aren't more. Easy weight savings.

(Update) I just put the lifepo4-specific tender on just to check, and it says my battery condition went from flashing green to 100% in a few minutes, which means its healthy. Also the box specifically says 60% lighter than agm, no risk of leaks, no risk of fires with punctures.

2005 Magnetic Blue Elise, Factory twin oil coolers, Sport pack with LSS wheels with 6.5 fronts, and touring pack with matching hardtop and insulated soft top. OEM stage II exhaust, carbon fiber intake, HID's, 5.25 and 6.5 Polks with JL Stealthbox and Alpine PDX-5 amp, Sony DSX-S310BTX head unit with Bluetooth, sector111 bootie and aluminum carpet buttons, OEM embellisher rings, shower cap and outdoor cover, factory painted console and AC shroud, battery cut off switch, factory starshield.

Last edited by gooberschnot; 11-28-2015 at 06:37 AM.
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post #282 of 305 (permalink) Old 03-06-2016, 02:01 PM
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I picked up a basic duracell battery from my local batteries plus, which seems to work ok, but it slides back & forth. The stops on the battery where it is held by the bracket are about an 2 inches longer than the length of the bracket, allowing it to move.

Does anyone have a list of batteries that the stock bracket will hold tight?

'07 Exige S
'14 Cayman
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post #283 of 305 (permalink) Old 03-06-2016, 02:31 PM
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You mean it slides left to right? (Or back to front of battery)?

I'd just make a new bracket (riveted, welded), but uncertain as to what you mean.

My car has no left to right stops IIRC.

You could also move where the bolt fits into floor.

05 elise (BOE Rev300 supercharged, SSRs, shift tower mods, Multivex; HID hi/low beams); 05 Corolla XRS

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post #284 of 305 (permalink) Old 03-06-2016, 02:32 PM
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Originally Posted by glb View Post
You mean it slides left to right? (Or back to front of battery)?

I'd just make a new bracket (riveted, welded), but uncertain as to what you mean.

My car has no left to right stops IIRC.

You could also move where the bolt fits into floor.
Front to back.

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post #285 of 305 (permalink) Old 03-06-2016, 03:09 PM
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Ppl have moved where the bolt screws in. Also replaced the "nut" when something broke.

Don't remember that it is difficult.

Can you return that battery for refund?

If not, I'd weld up a better bracket (can be riveted).

A cheap guy would take a piece of wood, route out where the lip needs to go, add some velcro (to floor/wood/battery) and bolt it in. I am cheap, btw....

I bought, like others, a nice USA Deka AGM battery. I like it; bolted right in.

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post #286 of 305 (permalink) Old 04-26-2016, 06:39 PM
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I left my Lotus back home, moved away, and no one started it up like I'd asked (and no power to run the battery tender)

I'm going back for a week, and need to get a new battery delivered. (the current battery sat thru winter and has been dead for a few months... I'm assuming it can't be jumped and re-charged?)

Anyhow, I need a new battery, and I don't know the width/length to fit the brackets, which I assume are still factory.

Would this battery from Sears work?

If not, could someone please link a good agm battery that will fit w/o special brackets and doesn't cost an arm and a leg? Thanks.
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post #287 of 305 (permalink) Old 05-17-2016, 11:49 PM
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Full Spectrum Power Lithium Pulse 3 Battery

Has anybody run this on their 2ZZ? 375 cranking amps and 2.2 lbs!?

2005 Elise - built 10.5:1 2zz by MWR/Jeff Dalby (Deja Vu), Radium Auto bits, GTX2867R, BWR Penske Doubles, BWR Team Dynamics wheels...
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post #288 of 305 (permalink) Old 11-23-2016, 05:34 PM
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My Braille battery seems to have been deep cycled while sitting in service and it is dead.
I cannot seem to get my Ctek 4.3 to recharge it. The stickers came off, so I'm not sure which version it is.
I'll take some pictures so I can reorder a good one.

Unless once these are depleted so low they can be recharged back into good shape?
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post #289 of 305 (permalink) Old 11-23-2016, 07:28 PM
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My Braille battery seems to have been deep cycled while sitting in service and it is dead.
I cannot seem to get my Ctek 4.3 to recharge it. The stickers came off, so I'm not sure which version it is.
I'll take some pictures so I can reorder a good one.

Unless once these are depleted so low they can be recharged back into good shape?
Braille is the same as Big Crank and Deka, except the Braille is 2+ times the cost. If you can't resuscitate the Braille I'd advise you buy the Big Crank or Deka. They're all made by East Penn in the USA.

For what's it's worth I've drained my Shorai completely several times and it still comes back to life. I honestly thought it was toast each time. Their customer service is outstanding, with them replacing an out of warranty battery for my ZX-10R at no charge. They even replaced the battery I sent back with the larger, more expensive battery.

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post #290 of 305 (permalink) Old 11-23-2016, 09:21 PM
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Braille is the same as Big Crank and Deka, except the Braille is 2+ times the cost. If you can't resuscitate the Braille I'd advise you buy the Big Crank or Deka. They're all made by East Penn in the USA.



For what's it's worth I've drained my Shorai completely several times and it still comes back to life. I honestly thought it was toast each time. Their customer service is outstanding, with them replacing an out of warranty battery for my ZX-10R at no charge. They even replaced the battery I sent back with the larger, more expensive battery.



San

I'll have to find the relevant Deka/Big Crank that fit in my battery bracket then. Too many options of both.
I have a charger for the battery, but I don't think it can handle a battery this low. I'll have to see if anyone else has something I can use.
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post #291 of 305 (permalink) Old 11-23-2016, 09:35 PM
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I'll have to find the relevant Deka/Big Crank that fit in my battery bracket then. Too many options of both.
I have a charger for the battery, but I don't think it can handle a battery this low. I'll have to see if anyone else has something I can use.
I used a Deka ETX18L and ETX20L in my C6 Corvette. You can just use the number and find the same battery under a lot of different names. Chances are you can pick it up locally. Examples:

https://www.autozone.com/miscellaneo...ry/350084_0_0/

Super Start Extreme Power Sport AGM ETX18L - Power Sport AGM Battery | O'Reilly Auto Parts

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post #292 of 305 (permalink) Old 03-16-2017, 02:06 PM
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fwiw, I've had my Braille B2015 in my '07 Exige since at least December 2010 (when I bought it from the previous owner). I've used a battery disconnect switch this whole time. I've always turned the switch upon leaving my car.

It was my daily driver for 18 months in Los Angeles. After mid 2012, it was driven about once a month.

It is finally getting to the end of its life. For the past year or so, I would put it on a battery tender a few hours before I was going to drive. The past ~9 months, I've had to supplement with a portable starter (was too lazy to research batteries to get a new one).

In its life, I had to get a jump start from somebody only once and that was when I valeted my car (the only time ever). I got my car after dinner and it was surprise, surprise in need of a jump.

I just ordered a Shorai LFX27L3-BS12 (lithium ion) plus charger. The battery is an open box, new item discounted to $180. Only 4 lbs!

It'll be hard to beat ~5-6 good years (plus 1-2 not great, but surviving years) on the Braille - 5 in the cold Northeast, but hopefully I can update this thread in 5 years with good results.
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post #293 of 305 (permalink) Old 03-16-2017, 09:33 PM
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Get the Braille B2015 with a cutoff switch and be done with it.
If you are away for a while then either cut off the power
or affix a battery tender. I have tried other setups and this
is a nice compromise between weight and reliability.

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post #294 of 305 (permalink) Old 03-16-2017, 09:55 PM
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Get the Braille B2015 with a cutoff switch and be done with it.
If you are away for a while then either cut off the power
or affix a battery tender. I have tried other setups and this
is a nice compromise between weight and reliability.
I would politely disagree. Instead of the Braille, go with a Deka/Big Crank etc., as they're the same identical battery (minus a carbon case in some models) that Braille charges nearly twice the price for. They're all made here in the USA by East Penn.
Another thing Braille does is to claim higher (unrealistic) CCA numbers to pitch their batteries. All of this is fairly common knowledge if you do a little searching. Braille IMHO just makes their product appear to be high end, when in reality it's a very affordable product with a fancy wrapper and deceiving marketing.

Personally, I use a Shorai. Weighs next to nothing and their customer service is outstanding. They replaced a battery for me that was well out of warranty, and actually replaced the battery I had with the more expensive, more appropriate battery for my application. I have one in my Exige and my ZX10R.

San

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post #295 of 305 (permalink) Old 03-17-2017, 02:10 AM
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I would politely disagree. Instead of the Braille, go with a Deka/Big Crank etc., as they're the same identical battery (minus a carbon case in some models) that Braille charges nearly twice the price for. They're all made here in the USA by East Penn.

Another thing Braille does is to claim higher (unrealistic) CCA numbers to pitch their batteries. All of this is fairly common knowledge if you do a little searching. Braille IMHO just makes their product appear to be high end, when in reality it's a very affordable product with a fancy wrapper and deceiving marketing.



Personally, I use a Shorai. Weighs next to nothing and their customer service is outstanding. They replaced a battery for me that was well out of warranty, and actually replaced the battery I had with the more expensive, more appropriate battery for my application. I have one in my Exige and my ZX10R.



San

San, I agree and I picked up a brand new Deka to replace my aging Braille. It was $60 on sale and is identical to the Braille. I would go with lithium ion, but I'm worried about how long it can sit and thermal runaway.
I disengaged my automatic alarm and so on, which should prevent some drainage while it sits. Will still use a tender.
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post #296 of 305 (permalink) Old 03-17-2017, 06:30 PM
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San, I agree and I picked up a brand new Deka to replace my aging Braille. It was $60 on sale and is identical to the Braille. I would go with lithium ion, but I'm worried about how long it can sit and thermal runaway.
I disengaged my automatic alarm and so on, which should prevent some drainage while it sits. Will still use a tender.
I had a Deka in my old C6. Great value and lightweight too.

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post #297 of 305 (permalink) Old 03-17-2017, 08:18 PM
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I've posted several times about lithium ion batteries, but people's beliefs about batteries seem to border on the fanatical with no room for the facts. So it's fine if I don't change your mind, but perhaps someone reading this will consider something other than lead acid in the future.

Quote:
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I would go with lithium ion, but I'm worried about how long it can sit and thermal runaway.
I would suggest you have some misinformation. Lithium ion batteries, including the iron phosphate cathode type (LiFePO4) used in automotive starting applications, have far lower self-discharge rates than lead acid. My Chimera LiFePO4 battery can sit as much as 9 months before needing a charge ... no lead acid I'm aware of can do that.

Additionally, LiFePO4 batteries don't create oxygen when they burn, so they don't burn as hot or "run away" as you describe it: those are characteristics of lithium ion batteries with cobalt cathodes, like the batteries typically found in cell phones and many other consumer devices.

Right now, the arguments against LiFePO4 batteries for automotive starting are (compared to lead acid)

- higher cost
- lower total capacity
- lower maximum current
- charging system voltage differences
- requires protection against overcharging and overdischarging

If you can cope with these disadvantages, the advantage of a LiFePO4 is a typically smaller form factor, low self-discharge rate and dramatically reduced weight.

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post #298 of 305 (permalink) Old 03-17-2017, 11:22 PM
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I've posted several times about lithium ion batteries, but people's beliefs about batteries seem to border on the fanatical with no room for the facts. So it's fine if I don't change your mind, but perhaps someone reading this will consider something other than lead acid in the future.



I would suggest you have some misinformation. Lithium ion batteries, including the iron phosphate cathode type (LiFePO4) used in automotive starting applications, have far lower self-discharge rates than lead acid. My Chimera LiFePO4 battery can sit as much as 9 months before needing a charge ... no lead acid I'm aware of can do that.

Additionally, LiFePO4 batteries don't create oxygen when they burn, so they don't burn as hot or "run away" as you describe it: those are characteristics of lithium ion batteries with cobalt cathodes, like the batteries typically found in cell phones and many other consumer devices.

Right now, the arguments against LiFePO4 batteries for automotive starting are (compared to lead acid)

- higher cost
- lower total capacity
- lower maximum current
- charging system voltage differences
- requires protection against overcharging and overdischarging

If you can cope with these disadvantages, the advantage of a LiFePO4 is a typically smaller form factor, low self-discharge rate and dramatically reduced weight.

Glen
I don't disagree. I have a couple of Shorai batteries currently and have run the Deka/Big Crank. Unfortunately both of the cars (C6 Corvette and Lotus Exige S) have/had parasitic losses due to the alarm. I couldn't let them sit for long without a charger. My motorcycle never had that issue.

I used a Battery Tender on the Corvette/Deka and ponied up for the Shorai charger for the Exige S. I've accidentally fully discharged the Shorai and it's come back to life several times. Their customer service is outstanding. They replaced an out of warranty battery for me at no charge. It's still going strong.

I was after weight savings and both the Deka/Big Crank and Shorai delivered.

San

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post #299 of 305 (permalink) Old 03-18-2017, 08:05 AM
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while the charger is fiddly, I have used both the shorai lipo4e and a deka AGM. The AGM batteries struggle after dying once, and lose oomph after about 4-6 starts. The Shorai keeps starting instantly 10-15 times before it gets low.

In general, I kept both on respective tenders. The 10 lb weight savings on the Shorai is nice as well

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post #300 of 305 (permalink) Old 03-18-2017, 09:12 AM
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while the charger is fiddly, I have used both the shorai lipo4e and a deka AGM. The AGM batteries struggle after dying once, and lose oomph after about 4-6 starts. The Shorai keeps starting instantly 10-15 times before it gets low.



In general, I kept both on respective tenders. The 10 lb weight savings on the Shorai is nice as well

Which model Shorai did you use? @oldmansan , same question.
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