VoltaX Basic LiFePO4 Lithium Battery 100Ah Questions & Answers

Depending on the model of the VoltaX battery, some of the differences are the charge/discharge capacity, BMS, and Voltage indicator/LCD.

Hi WassDale, kindly check with sellers or Marketplaces.

Go to King's 4WD Supacentre and buy their 120ah Lithium

Hi Darren, we recommend using only identical batteries with series and parallel features.

Thank you for raising your inquiry with us, Les. It will depend on the power draw of the trolling motor. We recommend a charger with a 14.6V 20A capacity to charge the battery. Cheers!

Thank you for your enquiry, The F. We sent you a ProductReview DM with a guide on how to address the matter with the BMS that keeps going to sleep. Cheers!

HELLO, these steps did not work. Restarted the battery but keeps failing under significant load eg fridge or diesel heater starting

Thank you for the update, The F. We recommend communicating with the battery's seller for possible warranty support and coverage. Cheers!

Hi Bill D, thank you for your inquiry. We recommend connecting VoltaX batteries that have the same profile.

Yes and if buying both new and together I'd do that (or get one big one), but I happen to have a 100 & a 125. The only decent battery balancer seems meant to get 24v (the Victron one). The other thing I could do is use a big switch to use one battery at a time.

Hi Cell101010, thank you for reaching out to the Team. May we know if your VoltaX 135Ah battery model is the basic or the LCD variant and we will share the correct manual. Thank you.

I assume it’s the basic one? There is no LCD.

the X on it is green..

Sorry don’t know much about lithium batteries..

Thank you. We sent the manual via the ProductReview DM, kindly check. Cheers!

can i also get a copy of that manual as i have the same battery!

Hi Darren, we will send over a copy via DM. Cheers.

Yeah same problem here, I did hear that the battery was not a true 135ah but rather a 120ah, like you I have had no problems with mine and I was lucky enough to get the 135ah standard with a 50a BMS and I also purchased the slimline 135ah model with the 100a BMS, but I don't think the 135ah battery will be released again.

Hi Peter, thank you for your enquiry. We hope to get back into the market soon. Stay Safe.

Hi Wayne, the VoltaX 135Ah has true and correct capacity. We will keep you posted. Cheers.

Hi Shane, depending on your space requirement, either 1x battery or 3x will suffice. The basic model is a standalone battery although we have other 100Ah models that can support series and parallel connections.

Hi, thank you for your reply. As I don't know the VoltX batteries, are they certified one assembled and sealed. Cheers, Sane

Obviously, one bigger battery takes up a lot less space and likely weighs a little less but it will still have as many cells as 3 smaller batteries so it will weigh about the same. Lithium batteries are made up of hundreds of individual cells and unless you can get larger capacity cells, they just increase the number of cells for capacity. Of course, the downside of this is if you lose some cells you lose the whole battery even if they replace it under warranty you will still be without a battery. The advantage of 3 x 100ah batteries is that if cells fail in one, you'll still have 200ah while you get it replaced.

Look it like a Computer Network Storage Box (NAS), lots of smaller disk drives allow you to protect your data and replace the ones that fail without losing your data. Whereas one big drive fails and it has all gone.

I hope this helps

DS

Yes Shane, assembled and sealed. For more information, you may with our partner resellers or through our website, external link . Regards, Sarah.

Thank you for posting your enquiry, Road to I. Yes, 14V is a normal and acceptable resting voltage for the battery. Make it your day.

It probably hasn't run many cycles I wouldn't worry about it unless is an insurance claim

Hi Raymond E., you may share the unit's details by contacting us via customerrelations@voltax.com.au.

Hi Raymond E., you may email us via customerrelations@voltax.com.au for assistance.

Hi Matt, thank you for your enquiry. The Redarc BMS1230S3 battery charger fits the bill and will charge the LIFEPO4 batteries.

It's the bms. It may take charge and turn back on. If it's in warranty make a claim if not get a new BMS.

Hi Jim, we recommend contacting the seller of the unit for a warranty claim and further assistance.

Yes so the SOC graphs for these batteries looks really different to lead acid the only way to get a accurate messurment is with a shunt/current counter. you can get a rough idea by looking at the voltage.

Lithium SOC vs voltage graph, external link .

Rough voltage to SOC, external link .

I'd say that your battery is fine its probably just not getting fully charged. I had similar problems with this when I bought these batteries.

Hi Philip K., apologies. You may email us at support@voltx.com.au so we can further look into your concern with the product and for possible warranty coverage requests with the seller of the unit.

Hi Rene, our VoltaX LIFEPO4 batteries generally can be connected into series/parallel connections unless specifically stated on the listing page. You may share here the product's link to verify. Thanks

Yeah so I had 4 of the 135ah voltax battery running at 48 volts and it was a nightmare. It ran nowhere close to capacity due to the bms fighting eachother and the cell would get completely unbalanced. So in your situation I would say you maybe saved by the fact that you have two in parrell so if one stops taking charge the other will still take charge. The issues with this is, you can't safely draw charge as though you had two batteries in parallel your stuck at the rate of a single battery. my neighbour had this exact thing happen with 4 of the 135ah 12volt voltax battery in parallel. Drew a load from them 3 of them shut off and one had its bms fry due to it having to supply all the current.

Victron make a battery balancer for this sort of setup too Probably a must external link 

I ended up pulling mine apart and building a single 48volt cell with a daly bms it works wonderfully.

Sorry about typos I'm a tad dyslexic.

Oh! That is fascinating! So much for the built in bms unless you just use one alone battery then… So, with the addition of the external victory battery balancer, do you think it will work? I mean, will it override the internal Individual bms’s of the batteries to balance them all? I don’t have the skills (or perhaps the confidence) to pull the things apart and build a custom make job with one, good, bms.

I felt the the same way about teardown but it was not to bad in the end, daly bms are pretty good you just have to order the right one for your setup (get a bluetooth one). As for the victron battery balancer it was what I was going to go with but I would have had to buy like 3 to balance a 48 volts system external link 

In your situation I think the victron is a good fit it will save you losing the warranty, it wont overide the internal bms but thats fine but it will keep the batteries in series balanced which is the most important thing. and its cheap like 120 AUD. As for the charge and discharge issues of having them in parallel id would run as normal if your in warranty period. and then maybe scale it back abit maybe like 3/4 of what is says in the manual depend on what your using it for im off grid so down time is not an option so I have to be a bit more caution.

Hi Alex G, the VoltX 300Ah purple color model's continued C rating is 0.67C while its 5sec max C rating is 1.33C. We cannot recommend a specific brand of battery charger but you may check with local or online sellers for battery compatibility. Please note that the batteries can be series connected up to 4x to achieve 48V.

Alex, not sure about your question but I have the 100ah battery and I use it as an auxiliary battery in my 4WD. The batteries maximum charge input is 50 amps so I use a Renogy DCC50S 12V 50A DC to DC Battery Charger with MPPT which I can thoroughly recommend if that's what you are after. If you are using solar and your auxiliary is full, this charger will then use solar to charge your cranking batteries too.

I'm really not sure, mine is a Voltax but the person responding to some reviews says she's from Volta

Hi Mal M., VoltaX and VoltX are two different brands.

Hello, they are of two different brands but of the same seller and supplier.

Have a look at getting one with a good Bluetooth module. It will make diagnosing fault so much easier. The issue I had with the Voltax lifepo4 batteries was they where constantly shutting the power down when charging so the charge time was often way longer than it should be. I pulled my ones apart and put them with a 48volt s16 150a daly bms and it was like a whole new system.

Hi Simon F., LIFEPO4 batteries do not heat up like an AGM. No over-charging because of the BMS feature. A 100Ah LIFEPO4 battery can work with your Redarc charger.