This is a damn good deal from a reputable bricks and mortar retailer. I'm assuming they are lithium iron phosphate.

If you are thinking of converting now would be a good time!

Not sure but I think they offer free delivery as well.

Jaycar? Rtm? A secret?

Post title is
RTM Lithium Battery Sale

www.roadtechmarine.com.au/12-8v-120ah-lithium-deep-cycle-battery/p/SB2216?gad_source=1&gclid=CjwKCAiA2pyuBhBKEiwApLaIO128f3GaBvHL6TsJnrGtn5H_XRK0Ld8gJNMT2WIx7B8ltDMjm5df9BoC_GMQAvD_BwE


What Gary said

Bestest bit of Kit !
Will get one to replace 40+kg gel battery .
Mason

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FormulaNova said..
Jaycar? Rtm? A secret?

We don't see you over here much, cheers

I have reservations about cheap items especially on sale. The price difference between a cheap and a top line battery no matter the chemistry has to be justified, not saying all cheap is crap but .and I've said it before be ware of the pro rata warranty it is a trap

I wouldn't rush and grab them. Renogy have a good name and they have 100 AH batteries for $500. Will Prowse did a tear down of Renogy batteries and found them great value.

au.renogy.com/core-12v-24v-48v-100ah-deep-cycle-lithium-iron-phosphate-battery/?Rng_ads=0994f675d1d3cfbb&kw=&ad=&gr=&ca=17082876919&pl=ga&gclid=CjwKCAiA_aGuBhACEiwAly57MSE3BjNS292voxFo2YV6sZW_gJGBhmdJS-4eR-bGbrcZmWD_GXGXOBoCJlMQAvD_BwE&r_u_id=1912567345&gad_source=1



I would be very wary of grabbing a Lithium battery without knowing something of its build quality.

But thanks for the heads up anyway - it looked interesting for a minute.

For those why want the cheapest yet

outbax.com.au/products/gentrax-12v-100ah-lithium-iron-phosphate-battery-lifepo4-rechargeable?utm_source=FACEBOOK&utm_medium=CPC&utm_campaign=6492071373238&utm_content=6543939442838%E2%80%8B&fbclid=IwAR3STH8l_Nb1joy4c8sgyUejsJ1Tnn243fZxQVMERuWDX7kHRGrPUAqMUSw

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Kankama said..
I wouldn't rush and grab them. Renogy have a good name and they have 100 AH batteries for $500. Will Prowse did a tear down of Renogy batteries and found them great value.

au.renogy.com/core-12v-24v-48v-100ah-deep-cycle-lithium-iron-phosphate-battery/?Rng_ads=0994f675d1d3cfbb&kw=&ad=&gr=&ca=17082876919&pl=ga&gclid=CjwKCAiA_aGuBhACEiwAly57MSE3BjNS292voxFo2YV6sZW_gJGBhmdJS-4eR-bGbrcZmWD_GXGXOBoCJlMQAvD_BwE&r_u_id=1912567345&gad_source=1

I would be very wary of grabbing a Lithium battery without knowing something of its build quality.

But thanks for the heads up anyway - it looked interesting for a minute.

Thanks. That is an excellent video and I'm a real fan of Renogy stuff and I have watched videos of Renogy home solar battery installations. I have now bookmarked this blokes channel and will have to check out his other stuff. I had a cheap lithium battery in my race car and the vibrations broke the positive terminal off the circuit board underneath. I glued the terminal back in so that it makes a permanent contact and encased the battery in a plywood box and now use it as a jump start battery. The car now has an AGM battery. I would be reluctant to spend that sort of money on a battery that's going to live in a mono hull yacht. I would be more inclined to spend the same money on two lead acid batteries and mount them central and low.
It's interesting when researching home solar battery systems that lead acid batteries are still very popular. While there are improvements with lithium batteries, technology has not stood still for lead batteries. These stop start cars that turn the engine off at the lights and start as you drive off has produced a new line of lead acid batteries. They are expensive but why lead and not lithium?

I used Will Prowse's knowledge & videos when I was setting up my lithium bank - great channel!!

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Ramona said..

Kankama said..
I wouldn't rush and grab them. Renogy have a good name and they have 100 AH batteries for $500. Will Prowse did a tear down of Renogy batteries and found them great value.

au.renogy.com/core-12v-24v-48v-100ah-deep-cycle-lithium-iron-phosphate-battery/?Rng_ads=0994f675d1d3cfbb&kw=&ad=&gr=&ca=17082876919&pl=ga&gclid=CjwKCAiA_aGuBhACEiwAly57MSE3BjNS292voxFo2YV6sZW_gJGBhmdJS-4eR-bGbrcZmWD_GXGXOBoCJlMQAvD_BwE&r_u_id=1912567345&gad_source=1

I would be very wary of grabbing a Lithium battery without knowing something of its build quality.

But thanks for the heads up anyway - it looked interesting for a minute.

Thanks. That is an excellent video and I'm a real fan of Renogy stuff and I have watched videos of Renogy home solar battery installations. I have now bookmarked this blokes channel and will have to check out his other stuff. I had a cheap lithium battery in my race car and the vibrations broke the positive terminal off the circuit board underneath. I glued the terminal back in so that it makes a permanent contact and encased the battery in a plywood box and now use it as a jump start battery. The car now has an AGM battery. I would be reluctant to spend that sort of money on a battery that's going to live in a mono hull yacht. I would be more inclined to spend the same money on two lead acid batteries and mount them central and low.
It's interesting when researching home solar battery systems that lead acid batteries are still very popular. While there are improvements with lithium batteries, technology has not stood still for lead batteries. These stop start cars that turn the engine off at the lights and start as you drive off has produced a new line of lead acid batteries. They are expensive but why lead and not lithium?

As an aside I just went down the maintainable lead acid battery rabbit hole and stop start batteries appear to be the only maintainable start batteries available, lots of deep cycle options though. Salespeople blame consumers not wanting batteries they have to maintain, let's hope we have an electric car fleet before they make engines without a dip stick for convenience !

I think electric car sales are on the wane a bit. The high cost of fast chargers is hurting a little. On the up side some of the technology from electric cars is perfect for boating people. The 12v brush less water pumps the electric cars need is just brilliant and cheap. They are also fully submersible.

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Ramona said..
I think electric car sales are on the wane a bit. The high cost of fast chargers is hurting a little. On the up side some of the technology from electric cars is perfect for boating people. The 12v brush less water pumps the electric cars need is just brilliant and cheap. They are also fully submersible.

Got a link to an example?

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julesmoto said..

Ramona said..
I think electric car sales are on the wane a bit. The high cost of fast chargers is hurting a little. On the up side some of the technology from electric cars is perfect for boating people. The 12v brush less water pumps the electric cars need is just brilliant and cheap. They are also fully submersible.

Got a link to an example?

I have just bought one of these to pump water in my air/water intercooler set up on a car. They pump a lot of water but you can slow them down. The quality is first class.
www.ebay.com.au/itm/266156377485

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garymalmgren said..
Post title is
RTM Lithium Battery Sale

I could swear that the title didn't have RTM in it when I looked. I must be getting old and more senile

It's almost like there was some time-travel involved...

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woko said..

FormulaNova said..
Jaycar? Rtm? A secret?

We don't see you over here much, cheers

You would be surprised who reads things when its an interesting topic. I learned to sail before I learned to windsurf or kite.

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Ramona said..

julesmoto said..

Ramona said..
I think electric car sales are on the wane a bit. The high cost of fast chargers is hurting a little. On the up side some of the technology from electric cars is perfect for boating people. The 12v brush less water pumps the electric cars need is just brilliant and cheap. They are also fully submersible.

Got a link to an example?

I have just bought one of these to pump water in my air/water intercooler set up on a car. They pump a lot of water but you can slow them down. The quality is first class.
www.ebay.com.au/itm/266156377485

Thanks, and German no less!

Can I use these pumps instead of the rule pumps for water pressure? I keep blowing mine up, well I have only had three but they all fail in the end with the switch I think. Maybe put a pressure switch on this one or is that a bad idea for my shower system? Why are these pumps good? Bosch seems like good quality. Doesn't PWM mean you could put a cheap motor controller in it so you didn't have to do the whole on off thing with the shower pump?

At the other end of the market, given that sometimes you get what you pay for!

customlithium.com.au

Getting a good reputation at high end.
For a boat, the slim size models might make fitting a lot easier.

When my insurer says I can charge them i will going here for a look here.

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Kankama said..
Can I use these pumps instead of the rule pumps for water pressure? I keep blowing mine up, well I have only had three but they all fail in the end with the switch I think. Maybe put a pressure switch on this one or is that a bad idea for my shower system? Why are these pumps good? Bosch seems like good quality. Doesn't PWM mean you could put a cheap motor controller in it so you didn't have to do the whole on off thing with the shower pump?

These are only 12psi whereas your water pump is probably 40psi.
You only need to replace the pressure switch on your existing pump (about $20) - search eBay for "Water Pump Pressure Switch 40 PSI Caravan 12v" or "12V 24V 240V Caravan Pump 40PSI Pressure Switch" etc.
I keep one of these in my "Spares" box.
I now use a relay, power direct to pump with switch to the relay, on my water pumps & have not had the trouble I used to have running just the pump switch.

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Kankama said..
Can I use these pumps instead of the rule pumps for water pressure? I keep blowing mine up, well I have only had three but they all fail in the end with the switch I think. Maybe put a pressure switch on this one or is that a bad idea for my shower system? Why are these pumps good? Bosch seems like good quality. Doesn't PWM mean you could put a cheap motor controller in it so you didn't have to do the whole on off thing with the shower pump?

They do have reasonable pressure. Check the video. They are made for cooling electric cars so the quality has to be be good. They are centrifugal pumps and the disc is just a scaled down version of what Honda fire pumps use. The outlet is 19mm so they could be used as a deck wash down using plastic garden hose. They are PWM but I'm leaving that disconnected and will use the full volume. They are made for volume and not necessarily pressure. Household pressure is 20psi through 12mm. I would check what your shower head flows, I bet you it's not much with a modern shower head.

I am going to store my only lithium battery well clear of my garage.

www.fireextinguisheronline.com.au/blog/post/lithium-ion-battery-fire-extinguishers-a-guide

"Lithium batteries burn at 1000c and do not require oxygen to combust"

I guess we're all happily doing 100kph in a vehicle with 50 litres of petrol on board aren't we!

An extract below with advice from my insurer:

'The good news is that most reputable insurers are generally open to accepting boats with lithiumbattery banks, provided they meet certain safety and installation standards:

- Professional Installation: The installation must be completed by a qualified Marine Electrician with experience in lithium battery systems.
- Proper Housing: The batteries must be housed in a dedicated, well-ventilated compartment that meets relevant safety regulations.
- Appropriate Firefighting Equipment: The boat must be equipped with suitable fire suppression systems specifically designed for lithium battery fires.

While I can't guarantee every insurer's stance on your specific situation, the general consensus within the insurance market is that professionally installed and housed lithium batteries with proper fire suppression measures are not an automatic obstacle to coverage'.

Check the requirements in the standards for proper housing and appropriate fire suppression. A review of the total costs made me stay with lead.

This is also a good article on the topic:

nordkyndesign.com/lithium-battery-banks-fundamentals/

activfire.csiro.au/pdfs/documents/CSIRO-AN-004.pdf

I'm fairly confident the lithium batteries in the Porsche were installed by professionals! What we should probably be more concerned about is the fires in homes and the loss of life directly attributed to lithium batteries in house fires.

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Ramona said..
I'm fairly confident the lithium batteries in the Porsche were installed by professionals! What we should probably be more concerned about is the fires in homes and the loss of life directly attributed to lithium batteries in house fires.

At present, lithium-nickel-cobalt-manganese-oxide (NCM) in a ratio of 6:2:2-in terms of the parts nickel, cobalt, and manganese-is most frequently used in electromobility in Europe


NCM or NMC isn't the safest but is a good compromise for cars, the Porsche site states they use that.

LFP is good for boats, below is one reason why.


Disclaimer: I'm a clunky engineer, batteries are not my strong point

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EastCoastSail said..
An extract below with advice from my insurer:

'The good news is that most reputable insurers are generally open to accepting boats with lithiumbattery banks, provided they meet certain safety and installation standards:

- Professional Installation: The installation must be completed by a qualified Marine Electrician with experience in lithium battery systems.
- Proper Housing: The batteries must be housed in a dedicated, well-ventilated compartment that meets relevant safety regulations.
- Appropriate Firefighting Equipment: The boat must be equipped with suitable fire suppression systems specifically designed for lithium battery fires.

While I can't guarantee every insurer's stance on your specific situation, the general consensus within the insurance market is that professionally installed and housed lithium batteries with proper fire suppression measures are not an automatic obstacle to coverage'.

Check the requirements in the standards for proper housing and appropriate fire suppression. A review of the total costs made me stay with lead.

This is also a good article on the topic:

nordkyndesign.com/lithium-battery-banks-fundamentals/

activfire.csiro.au/pdfs/documents/CSIRO-AN-004.pdf

So how do you build a "suitable fire suppression system" when the CSIRO will not certify any fire extinguisher for the purpose.

Anyway once you actually reach thermal runaway nothing is going to save it.