12V 280AH Stainless Steel Casing with 250A discharge/charge
🚗FREE SHIPPING
🚕FREE BLUETOOTH
🚙Designed and made in Australia
🛻A-Grade GFB Prismatic Cells
🚓Lifetime Free Service
Weight: 32kg
Dimensions: 36.5 × 17 × 28 cm (+3cm to include terminals)
Pickup will be available at Big Wei Battery located at Unit4/17 Moss St, Slacks Creek, 4127
We are open from 8:30am to 5:00pm Monday to Saturday
What the, the price went up
Why are these 10 times more expensive than car batteries?
Bigger than battery used in tesla model x?
You can't compare just the capacity. Tesla battery will be a much higher voltage.
How so? Tesla batteries are about 60 kWh, this one is 280*12/1000= 3.6 kWh, so about 17 times smaller.
Wish electric cars were simpler and use easy swap batteries like this so we can continue to use them and change/upgrade the batteries for cheap when they eventually die. I know there are some 3 wheelers in many asian country that still uses easy swapable car/bus batteries and has very low running cost and maintenance.
You're right. Don't know why people are negging you. In india and kenya they are trialling 3 wheelers and motorbikes with swappable batteries.
I had to charge my car battery twice a day, morning at work, evening at home, when the alternator failed and the battery bloated.
It was just to get by for 2 weeks until the new car arrived. And that was only 15-20kg.
Can't imagine doing the same for the primary battery in an electric car. There would need to be significant engineering to make the change over safe and quicker than a 20 minute fast charge.
I am not saying to make the batteries hot swapable and swap them instead of charging them but similar to swaping a car battery when they die eventually.
An EV battery is around 500kg, and lasts for many years. A big issue for the makers would be fear of bad press from after-market batteries exploding, as we see on scooters and e-bikes.
Given the battery is the most expensive part of the car, it would be nice if they came with 2 or 3 battery bays, each holding a 200kg pack.
You could get a car with just one pack for city driving, and rent an extra one or two for a holiday trip.
Or borrow from the car you leave at home, to put in the big family car for the trip. When the battery is getting a bit old, add it to the house's "powerwall".
Upgrade to higher capacity packs when technology improves, creating a second-hand market for lower-capacity used packs.
Swaps would be done at a shop, maybe the same place that sells and installs tyres.
is the Wei really that big?
280A X 12v puts you at about 3.3kwh.
Aldi have a Volt X branded battery just under 1/2 the capacity (120Ah) for $449.
That's for the VoltX basic battery, which have much lower cycle life. Also lower max input and output current.
You need to look at the VoltX Plus range if comparing. Price is similar then, and both options have some unique advantages depending on usage.
*Edit. Before the price rise anyway… The on sale VoltX Plus 300Ah is cheaper.
BWB LiFePO4 batteries are designed and made in Australia
made of A-grade & Brand new GFB LiFePO4 cells
3 year warranty and lifetime free service
Once these batteries are out of warranty, and the three years are up, what would be involved in the lifetime free service? I mean, what would you be providing exactly? Thanks!
What does lifetime free service mean?
Thanks for your question:
We offer Free Lifetime Service. So, whether it’s still under warranty or beyond the warranty period, our service is Free. You will only have to pay for the parts or materials that need to be replaced when the product is beyond the warranty
So it's not necessarily free lifetime service is it?
It's just free labour on the service…
Or can a service consist of something like an inspection and then you guys just put it back together and so it's good to go?
@Sammy Boi: There's nothing serviceable in the batteries, it's a bit of an airy-fairy claim IMO…. I assume "service" means if the BMS dies they'll do repairs and not charge you labour, you'd just pay for the replacement BMS…. (not that you'd want to install another crappy Daly BMS)
If a cell died you'd probably just ditch the battery, the cell terminals are welded together so it probably wouldn't be practical to replace one cell, and if one cell died they'd probably all be in pretty poor condition….
Edit: I guess "service" could also cover replacing one of the cheap crappy terminals they use if you broke one…
Likely just charge too much for parts to cover labour?
What constitutes "warranty" in terms of capacity anyway?
Say, if one cell is rubbish and the thing drops to 30% capacity..is that a warranty claim?
Or since it's still working (even if 30%), there is no warranty claim?
@tunzafun001: With reasonable quality LiFePO4 batteries capacity generally isn't an issue in the warranty period, they have a fairly high cycle life and the smart-BMS's should prevent them from being abused to the point of failure…
If your battery dropped to 30% in the 3 year warranty there's a major issue and you'd expect them to fix the issue… With an expensive battery like this you'd be covered under "Australian Consumer Law" beyond the 3 years, they quote a cycle life of 6000 cycles which is 16 years with daily cycles, so "a reasonable person" would expect this to last well beyond 5 years, so by law they should repair it if it failed at like 5 years of age, or even more… (the BMS has a cycle counter)
Don't put too much faith in their "Australian Made Quality" claims, they cut corners and cheap-out where ever they can….. They seem to use decent cells in their batteries but they cheap out on the BMS, terminals, and assembling…
If you're considering dropping near on $2k one of these batteries do some research on Daly BMS's first, they're the lowest quality name-brand BMS on the market, they don't do the job very well and there's basically no support… Anyone who knows anything about LiFePO4 batteries avoids them like the plague…
For example: A couple of months back Daly screwed up a firmware update and caused a lot of issues for people:
https://diysolarforum.com/threads/todays-daly-smartbms-andro…
Also, the Daly BMS's Big Wei use seem to be 2+yo discontinued models…
I still don't get this. It is still 12v battery and not the high voltage battery in EV. Why so expensive?
This type of deep-cycle storage battery is generally used as a Aux/House battery in caravans, campervans, yachts, shacks, camping, all off-grid setups basically…
LiFePO4 batteries are far superior to lead-acid/Gel/AGM batteries…
A few points…
- AGM batteries you can only use 50% of the capacity (a 100Ah you can only really use 50Ah, if you do drain them below 50% regularly you kill them fairly quickly), lithium you can use near on 100% of the rated capacity (80-90% if you want to be kind to them and maximize life)…
- Lithium is significantly lighter, around half the weight of AGM…
- AGM has a cycle life of a few hundred cycles, good quality lithium is a few thousand cycles….
- Charge efficiency, AGM is 85-90%, lithium is near 100%…
- The charge rate of lithium is significantly higher than AGM's, they charge very fast…
@FLICKIT Do you have any knowledge of the Bluetti portable units. Battery / charger / inverter any good?
Not at all sorry… I've only seen them in passing, they look ok for a portable power-bank but kinda pricey…
@FLICKIT: I thought the EB70 for $600 on Ebay yesterday was decent value?
With a battery, pure sine AC inverter, charger, mppt controller, DC-DC output?
https://www.digidirect.com.au/catalog/product/view/id/81862/…?
The 200w input max lets it down for me (if you wanted to use say a 600w microwave during daylight hours).
Lithium batteries have never been cheap.
Probably Eve cells which cost about $900 delivered, add bms, another $100. So just for cells and BMS is $1000. Labour, case and fitting also need to he included.
They use GFB (Ganfeng) cells…
Above I crap on the Daly BMS's they use and such, but the cells do seem good..
From new I cycled my 100Ah battery a few times being very conservative, 13.6v charge voltage, discharged down to 12v, using a 25amp load, the capacity was pretty much dead on 100Ah… If I had used the normal max and min voltages that people usually use to measure battery capacity, 10v - 14.6v, the capacity would have been quite a bit higher no doubt, +10%… … Being brand new cells the chances are the capacity will drop off a bit early in life but I still think it's pretty good considering the voltages I worked with, it's almost certain they're new high grade cells.. .
Edit: just out of interest, have you found a reliable supplier for Eve cells at that price? … Reading around it seems all the usual suppliers are very hit and miss, it's quite a big gamble…
is this good