Relion RB170, 170 Amp Hour, 12 Volt Lithium Iron Phosphate Battery

Price: $1,850.00

Availability: in stock


Relion RB170, 170Amp Hour (AH), 12 Volt Battery with a 200 Amp Continuous Discharge rate!


The Relion RB 170 is a special battery, chosen because of it's incredible 200 Amp discharge rate and a capacity that puts it right in the sweet spot for single battery systems, at a great price point.  

Why do we love this battery so much?

1) It's crazy powerful.  You better make sure to use huge wire and good fusing because this monster can discharge upward of 2500 Watts continuous.  That's a big deal because most of the Lithiums out there are only rated at 100 Amps (about 1200 Watts at 12V).  While that's pretty impressive, it will fall short of the 1500 W that is so common in things like Microwaves, hair dryers, coffee pots, toaster ovens, induction cookstoves,  skillets, air conditioners, etc,etc,etc..

2) It's easier and cheaper to put one battery in than two.  Since this one battery has the discharge rate of two, we can save ourselves a fair amount of grief in wiring, fusing and mounting.  Running batteries in parallel is a pain and is easy to mess up.

3) We love the size and shape of this high quality battery as well as the included straps which makes mounting easy.

4) While 1 battery is a beast, 2 is a maniac.  That means 400 Amps continuous with 340 Amp Hours capacity.  Better use the big bus bars! With this much power you can really run most anything, including the big stuff like well pumps, welders, or multiple smaller loads.  This makes your RV unstoppable.

Take a look at the Manufacturers website:


Nominal Voltage 12.8 V
Nominal Capacity 170 Ah
Capacity @ 25A 408 min
Energy 2176 Wh
Resistance ≤55 mΩ @ 50% SOC
Efficiency 99%
Self Discharge <3% per Month
Maximum Modules in Series 1 (Single Use)


Dimensions (L x W x H) 19.5 x 10.6 x 7.9” 495 x 268 x 201.5 mm
Weight 66.1 lbs (30 kg)
Terminal Type M8 X 1.25
Terminal Torque 80 - 100 in-lbs (9 - 11 N-m)
Case Material Steel Case
Enclosure Protection IP56
Cell Type - Chemistry Cylindrical - LiFePO4


Maximum Continuous Discharge Current 200 A
Peak Discharge Current 250 A (≤5 s)
BMS Discharge Current Cut-Off 480 A (±50 A) (6 ±3 ms)
Recommended Low Voltage Disconnect 11 V
BMS Discharge Voltage Cut-Off 8 V (2.0 ±0.1 vpc) (100 ±50 ms)
Reconnect Voltage 10 V (2.5 ±0.1 vpc)
Short Circuit Protection 400-800 μs


Recommended Charge Current 34 A
Maximum Charge Current 100 A
Recommended Charge Voltage 14.2 V - 14.6 V
BMS Charge Voltage Cut-Off 15.2 V (3.8 ±0.05 vpc) (1 ±0.5 s)
Reconnect Voltage 14.4 V (3.6 ±0.05 vpc)
Balancing Voltage 14.4 V (3.6 ±0.025 vpc)


Discharge Temperature -4 to 140 oF (-20 to 60 ºC)
Charge Temperature 32 to 113 oF (0 to 45 ºC)
Storage Temperature 23 to 95 oF (-5 to 35 ºC)
BMS High Temperature Cut-Off 149 oF (65 ºC)
Reconnect Temperature 122 oF (50 ºC)º


Certifications CE (battery) UL1642 & IEC62133 (cells)
Shipping Classification UN 3480, CLASS 9



We test tons of different batteries at our off grid solar showroom in Portland Oregon and this is the best battery we’ve ever tested.  It's small, light, long lasting, high quality, and good price. This is the ultimate single battery for off grid solar systems and if you can do all this with just 1 battery, imagine what you can do with 2!