Nano 12V 170Ah Smart Heated LiFePO4 Battery (2.18kWh)
SKU: 68814541517

Nano 12V 170Ah Smart Heated LiFePO4 Battery (2.18kWh)

Sale price$631.80 Regular price$702.00
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Description

Nano 12V 170Ah Smart Heated LiFePO4 Battery (2.18kWh)Smarter Smaller Lighter Better There is no comparison. The smallest and lightest 2. 18kWh of battery power you can get and it is built in Canada. Complete customization and bulk dealer pricing available so please contact us! Royer's Nano 12V 170Ah battery uses a smarter BTBMS which lets you know whats going on at all times as well as controls the automatic built in heating. Royer Batteries use LiFePO4 chemistry which is some of the longest lasting and

Smarter | Smaller | Lighter | Better

There is no comparison. The smallest and lightest 2.18kWh of battery power you can get and it is built in Canada. Complete customization and bulk/dealer pricing available so please contact us! Royer's Nano 12V 170Ah battery uses a smarter BTBMS which lets you know what’s going on at all times as well as controls the automatic built-in heating. Royer Batteries use LiFePO4 chemistry which is some of the longest lasting and safest lithium chemistries. You can always monitor real-time usage from the optional RB Smart LCD or from the Phone/tablet app.

Capacity

Using four of Royer's high capacity 3.2V 170Ah prismatic cells translates into a more reliable battery with less parts and less issues. Royer Batteries cells are designed to use full depth of discharge giving maximum capacity when required. You always have the option (through Bluetooth App or from factory) to change the charging and discharging parameters to a 20%-90% cycle to further extend the lifetime of the battery. Compared to lead acid, lithium offers more than 2x the usable power per rated Ah due to depth of discharge. To put it in perspective, just one (1) Nano 12V 170Ah battery replaces the usable energy of over 3 (3.2) standard golf cart batteries (6V 225Ahr).

Cycle Life

A cycle is the complete charge and discharge of the battery. For example: If half of the capacity is used and then charged backed up, its 1/2 cycle. If the battery was cycled daily, it will be 8-13 years until you realize 20% capacity loss. This means with the 170Ah, after 3000 – 5000 cycles you would still have up to 136Ah (1.09kWh) of usable power left. The battery can easily have a useful life of more than 10,000 cycles or 25 years in most applications. Since Royer batteries are so long lasting they include Royer's 10-year warranty, although you can expect it to run much longer. Royer can fully service the battery at any point in its lifetime, under warranty or after. Their cases are easily accessed to diagnose/replace parts after the warranty ensuring you are never left with a paper weight.

Smart BMS

Lithium batteries require a battery management system to ensure proper voltage and temperature cut-offs. Separating Royer batteries from other lithium batteries is their smart BTBMS. It allows users to set parameters of charging and discharging, monitor real time usage, see available power left, and turn on & off the battery from a phone/tablet. Since you’re able to turn off the battery with one click, you can more safely install, transport and turn off your system. Royer's optional RB Smart LCD screen also shows BTBMS values and allows turning off either charge or discharge of the battery. The BTBMS has automatic high/low temperature & voltage cut-offs to maximize your battery life. Since the BMS they use is open source, there are many different apps that can monitor the battery & Royer BTBMS can be purchased in the marketplace easily for after warranty repair.

Temperature

With LiFePO4 chemistry, normally it cannot be charged in 0 °C or discharged in -20 °C temperatures. Royer batteries come with a built-in automatic heating that raises the internal temperature above 5 °C when charging. Regardless of your battery location and climate, your battery will work. If the battery charging is turned off via the app or hard switch, the heater is turned off. Without a charging source, the heating is also turned off. The heater will only use power from the charging source.

Amp Rates

Royer smart BTBMS is rated to output 150A continuously, 200A 60S, 300A 1S, with an instant 1120A short circuit cut-out. Charging cut-off is peak 125A for 60s. Recommended charging is 50-75A per battery for longest lifetime of the battery. Multiply amperage rates by the number of paralleled batteries to increase ratings. Please gauge and fuse your wiring accordingly to account for expected loads.

Safety

The most important aspect to all Royer batteries is safety. LiFePO4 is one of the safest lithium chemistries and will not catch on fire like other li-ion batteries. There is no venting or required maintenance with these batteries. Storage losses are under 3% per month so you can leave the battery dormant for long periods without issues. Royer BTBMS has internal cut-offs for shorting and too high of loads but always fuse your systems as if these features are not in place. Best practice is when the battery is off to treat it as live.

Size/Weight(7.9″ x 8.8″ x 11.9″ 40lbs)

There is no lighter or smaller battery per kWh. Royer batteries are made using the smallest size case possible. The lead acid equivalent would be 6x heavier and larger. Most other lithium batteries are 20-50% heavier and larger footprint. This battery can be oriented however you need to fit in your battery space. On these batteries they use a thick metal casing with removable handles. Royer batteries should not be exposed to direct water at anytime.

Series/Parallel (4S/4P)

Royer Micro 12V 320Ah is capable of up to 2 series and 4 paralleled batteries. For 48V systems, 4x series 12V or 2x series 24V configurations are identical performance so it is up to personal preference which makes the most sense. Royer batteries are cross compatible between different Ah versions and ages (voltage must match). For example, start with a Nano 12V 170Ah and add a Micro 12V 320Ah anytime later. 

Watt Hours: 2178 Wh

Other Solar Batteries and Products

Micro 12V 320Ah
Micro 12V 640Ah

Micro 24V 320Ah
Nano 24V 170Ah

RB Smart LCD

Documents

View Spec Sheet Here
View Manual Here

 

Bluetooth App (XiaoXiang Electric)

No need to create an account at anytime.
Press “jump login” or “log in later” to use the app.

Alternative Bluetooth Apps

Apple App (XiaoXiang BMS)
Apple App (BMS Tool)
Apple App (Smart BMS Utility)
Android App (Lynac)
Apple App (Lynac)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 68814541517

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4.8 ★★★★★
Based on 743 reviews
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Masselyn
Bozeman, US
★★★★★ 5
Tight at first, but they stretch after a short time...feel perfect after the first week!
Size: 9.5-10.5, Color: Charcoal Faux Fur
I love them! My first impression was "oooh, this is too tight". I wear a size 10 shoe and honestly, the 9.5-10.5 felt tight when I first tried it. Without socks it felt okay, with socks my toes were right at the top. But I loved the style so much I decided to give it a chance - I am SO glad I did!!! They do stretch and give, so don't expect it to be tight forever. I have had them a week or so, wearing each day (I WFH) and they feel really nice. I also live in the mountains, we just had our first winter storm, and these slippers are nice and toasty. Exactly what I needed. The memory foam is plush, though I have had other slippers with it and I know it will squash down over time. Right now, it is a nice feeling as I walk around the house. They are super cute looking, wearing leggings allows me to feel like I am stylish even while still wearing my sleep thermals. YAY!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2025
A
Verified Purchase
Alyene
Lexington, US
★★★★★ 5
favorite slipper ever
Size: 8-9, Color: Charcoal Faux Fur
I love these slippers. They look great with pants tucked in. Incredibly warm and comfortable. I wear them almost every day. Fit is true to size. They stay up but are not tight at all. On top of that I get compliments on them. Highly recommend.
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Reviewed in the United States on May 3, 2026
C
Verified Purchase
Customer Review
Lexington, US
★★★★★ 5
Favorite Slippers Of All Time
Size: 6.5-7.5, Color: Charcoal Faux Fur
ETA 7/2024: So I ended up buying a size 5-6. They fit better around the top and sides of my foot but the sole is a bit small. The 6.5-7.5 sole fits better but the material around the top and sides is roomy so it bunches up. Sigh. I still love these slippers but the fit is frustrating. I'm obsessed with these slipper boots! They are so cute and comfy. They look especially good with leggings but I also like that I can tuck other types of pajama pants into them. I'm short and have to fold the waist of most pajama pants so they're not super long on me, but with these boot slippers on I don't have to worry about my pant bottoms dragging on the floor since I can just tuck them in. I like that they have rubber soles. I love the look of the faux fur but not sure how easy they will be to wash because of it. I wear a 7 or 7.5 and I got the 6.5-7.5 size. Even with thick socks on they are roomy. Because they are house shoes it doesn't matter much but I probably could've sized down. I like the way they look so much I might buy a size down and use that pair for wearing outside of my house. Some other reviews said they have a strong smell but mine did not.
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Reviewed in the United States on January 1, 2024
H
Verified Purchase
Here4Chocolate
Dallas, US
★★★★★ 4
Cozy warm, overall a good slipper!
I ordered a size Medium and I normally wear a women's size 8 US / 39 EUR and they fit well. According to the box, a Medium in Acorn sizing is Women's 6.5 - 7.5, but I do think these run a little large which is why I went with the Medium vs. Large. The boot part fits well, not too snug or too loose, and it stays up if it has something to adhere to (like over pants), otherwise it would slide down my bare leg. I am super sensitive to scratchiness lol, so I keep the boot part over pants because it is a little scratchy to me. These slippers are nice and cozy, so they keep my feet / ankles warm. The footbed provides a nice cushion and the soles/suede guards are strong but without making you feel like you are wearing actual shoes / boots. I have noticed that the footbed does not have a lot of rebound so there are definitely impressions of my toes inside... which means no one else will want to wear them... haha! I've also noticed the seams seem prominent on the inside, I wish they were a less noticeable, but that is just one of my hangups. So, the only reason I am giving a 4 instead of 5 is the inside is not as soft as I'd like and the seam problem. Regardless, I wear these all the time at home (which is where most of us all are right now) and I am happy with them overall. Oh, and I got the Buffalo Check pattern and it's super cute and fun!
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Reviewed in the United States on December 5, 2020
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Verified Purchase
BearlyVintage
Lexington, US
★★★★★ 5
Soft, Warm and Cozy
I have no idea how these stay up, probably magic. I'm tall so it's challenging to find boot style slippers that are long enough. If support or thick soles aren't an issue, these are the best I've ever found! My ankles and calves have never BEEN so warm; these are my go-to's in the evening. They're easier to walk in with socks but, without, they're floppy and loose. I'd hesitate to size down because it's more the lack of structure in the foot, not length. They wash well (air dry); still soft, warm and cozy. Inserts could probably be added to help with support. I tried them because I found them at a fantastic sale price but I'm buying another pair now, for winter. I'm a slipper person and I definitely notice the quality of materials in Acorns, when I compare them with other slippers.
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Reviewed in the United States on July 19, 2024

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