Renogy Lifepo4 Lithium-Iron Phosphate Battery 12 Volt 170AH Built-In BMS LFP Deep Cycle Battery for RV, Solar, Marine, and Off-Grid Applications
, Renogy Lifepo4 Lithium-Iron Phosphate Battery 12 Volt 170AH Built-In BMS LFP Deep Cycle Battery for RV, Solar, Marine, and Off-Grid Applications, 1109.99, USD,
13.7 x 6.1 x 10.6 inches
|Item model number|
Lithium-Iron Phosphate Battery 12 Volt
1 Lithium ion batteries required. (included)
|Is Discontinued By Manufacturer|
|Manufacturer Part Number|
The media could not be loaded.
I really wanted to give them 5 stars, but limited information is the issue. Trying to get very detailed information is like pulling teeth. I’m talking about how to take care of them for the best use and longest life possible. I know LFP doesn’t like to sit full and will last longer at 80% charger or so. Lugs of about 1/2″ is what you need. I actually drilled out 3/8 lugs with a step drill. Another small point is the label. Its cheap paper and tape stuck and ripped part of it off. Picture shows El Cheapo duct tape that was temporarily used to protect me and them that ripped off the part of the label. Would you think a $1500 battery should have a professional label, I would. But I have them and they are awesome as far as capacity goes. As soon as I figure out the best charging method, I will feel better, I am sure. I have reconsidered my fusing method all be ordering two 150 amp fuses instead of relying on a single 300A. This photo of the fuse I like isn’t the Renogy batteries, this was when I was testing the 3000W inverter. Renogy should follow suit and do what Battleborn has done , in that, they should be proactive and tell us what the various chargers should be set at.
Update. What I’ve concluded without help from Renogy. No call back last attempt to contact their “technical support”. The BMS accepts charging and when full, stops allowing charging until it a certain amount of discharge. So, basically you just need to send it 14.4 (+/- 0.2) volts all the time. Certain TM-2030 with SC-2030 settings need to be set, so for example the TM-2030 will reset to 100%. I have the following works for me, but I am not an engineer. I set P1=14.4, P2 =0.1, P3 = 340 (2×170) P7 = L3, P8 = 14.6,P11 = Sh.L or Sh.H (depending on your shunt size – 100A or 500A), P13 = 12 (don’t ever want to discharge to low voltage cut off), P14 = 0.0, P15 = 14.4, P16 = 14.4, P20 = 0, P21 = 0. Other settings are personal preferences, so carefully choose what your system needs. A real concern is the warranty. Or lack there of. Their 5 year is prorated. At 4 years, for instance you will pay 80% of new price to replace one. I also doubt their 7000 cycle life claim. Keeping depth of discharge no more than 75% (25% left) and charge amps below 50 amps or even 40 amps, should extend life expectancy. Maximum load is 100 amps and maximum charge rate is 50 amps (each). My Progressive 4655 for example, will produce about 34 amps constant all the way to full, at which point the BMS suspends accepting charge. So, recharge is 4 or 5 times quicker than FLA for a bank of similar size.
Paul Wagner –
I’ve been looking at replacing my AGM batteries in my RV for the last year with Lifepo4. I’ve looked at building my own bank, purchasing directly from China via Ali, and also compared with other domestic suppliers.
Currently, these Renogies are on sale at $1,250ish, making them a reasonable deal.
Here is why I went with Renogy’s 170AH solution vs. the less expensive 200AH solutions from China.
First, Renogy is a company I’ve purchased from in the past, and they generally stand by their products.
The best price I could find for 200AH Lifepo4s in China was roughly $880 including free shipping. On paper, this is solid. But you’re forfeiting any sort of warranty, and there are simply a lot of unknowns. For an extra $350, I was getting 30 less amp hours, but a limited 5 year warranty with a reputable company.
Important things to stress:
1) This battery does have a low temperature charging shutoff in their BMS. This is critically important since Lifepo4 cells can be damaged if charged below 32 degrees F. I was unable to get any clarification from the direct-from-China manufacturers, a fact I found troubling.
2) Tariffs. Beginning Sept 1, it appears the import of Chinese lithium batteries may be subject to a significant tariff. I was concerned that the batteries I ordered via Ali might be held at customs as a result. Too much of a gamble on this front.
3) Warranty. While not the best warranty in the business (it’s half the one provided by Battle Born), the five year warranty at least provides some surety. Battle Borns also tap out at 100AH, so I’d need to buy two. That would have been prohibitively expensive vs. the 170AH Renogy Lifepo4.
4) You’re going to need a different setup. These, as well as others, are represented as drop-in replacements. Absolutely not. You want to kill this battery quickly? Hook it up like a regular coach battery. So…absolutely DO NOT hook these directly up to your alternator, even if there’s an isolator. If you want to take this approach, you should purchase Renogy’s 20 AMP DC to DC controller. Also, be certain that your existing RV charge controller is happy with lithium batteries. Most older controllers are not. So in my case, the best approach is to charge with solar.
With careful management, this battery should last well over a decade with minimal degradation. This was more than I’d originally planned to spend, but I feel like this was the right choice for me.
I’ll update this in 6 months to let you all know how this performed through the winter. We have a 4×4 motorhome that we use throughout the ski season at various resorts, so fingers crossed that this performs as expected.
Dog lover –
This one battery replaces two 100 AH lead batteries and charges quicker. Will last longer, and works well with solar panels. Gives off no gas. You will need copper 1/2 inch copper lugs for battery connections. I reccomend buy only one. It will probably be all the power you need. I use with the Epever 4210an lifepo4 compatible solar charge controller with two 100 watt Renogy monocrystalline solar panels. You hook all your loads to battery except maybe some led lights to the charge controller load out. You can’t charge these will no LifePo4 charging systems. The solar panels charge these much faster than lead or Agm batteries.