RELiON Battery RB20-LT 12V 20Ah Low Temperature Lithium Battery
RELiON Battery's product pageThe RELiON Battery RB20-LT 12V 20Ah Low Temperature Lithium Battery is a battery pack with a nominal voltage of 12.8 V, a nominal capacity of 20 Ah, LiFePO4 cells, a continuous discharge of 20 A, a peak of 40 A (7.5 s ±2.5 s), a weight of 3 kg and an ingress rating of IP66.
Last updated: 16 October 2026
Battery and charging
- Voltage
- 12.8 V
- Chemistry
- LiFePO4
- Nominal capacity
- 20 Ah
- Maximum continuous discharge
- 20 A
- Peak discharge
- 40 A (7.5 s ±2.5 s)
- Recommended charging
- 1 A - 10 A
- Highest charge current it will take
- 20 A
- Recommended voltage disconnect
- 11.0 V
- BMS charge cut-off voltage
- 15.6 V (3.9 ±0.025 vpc) (1 ±0.3 s)
- Resistance
- ≤45 mΩ @ 50% SOC
- Efficiency
- 99%
- How fast it loses charge sitting idle
- <3% per Month
“Nominal Voltage 12.8 V”
Source: relion-battery.s3.us-east-1.amazonaws.com/docs/product/RELiON-Data-Sheet_RB20-LT.pdf
“Cell Type - Chemistry Cylindrical - LiFePO4”
Source: relionbattery.com/products/lithium/rb20-lt
“Nominal Capacity 20 Ah”
Source: relion-battery.s3.us-east-1.amazonaws.com/docs/product/RELiON-Data-Sheet_RB20-LT.pdf
“Maximum Continuous Discharge Current 20 A”
Source: relionbattery.com/products/lithium/rb20-lt
“Peak Discharge Current 40 A (7.5 s ±2.5 s)”
Source: relionbattery.com/products/lithium/rb20-lt
“Recommended Charge Current 1 A - 10 A”
Source: relionbattery.com/products/lithium/rb20-lt
“Maximum Continuous Charge Current 20 A”
Source: relionbattery.com/products/lithium/rb20-lt
“Recommended Low Voltage Disconnect 11.0 V”
Source: relionbattery.com/products/lithium/rb20-lt
“BMS Charge Voltage Cut-Off 15.6 V (3.9 ±0.025 vpc) (1 ±0.3 s)”
Source: relionbattery.com/products/lithium/rb20-lt
“Resistance ≤45 mΩ @ 50% SOC”
Source: relionbattery.com/products/lithium/rb20-lt
“Efficiency 99%”
Source: relion-battery.s3.us-east-1.amazonaws.com/docs/product/RELiON-Data-Sheet_RB20-LT.pdf
“Self Discharge <3% per Month”
Source: relionbattery.com/products/lithium/rb20-lt
Battery care and safety
- Ingress protection
- IP66
- Temperature it reconnects at
- 122 ºF (50 ºC)
- Temperatures it may be run in
- -4 to 140 ºF (-20 to 60 ºC)
- Temperatures it may be stored in
- 23 to 95 ºF (-5 to 35 ºC)
- How long the heater takes to warm it
- Approximately 1 hr @ 3 A
“Enclosure Protection IP66”
Source: relionbattery.com/products/lithium/rb20-lt
“Reconnect Temperature 122 ºF (50 ºC)”
Source: relionbattery.com/products/lithium/rb20-lt
“Discharge Temperature -4 to 140 ºF (-20 to 60 ºC)”
Source: relionbattery.com/products/lithium/rb20-lt
“Recommended Storage Temperature 23 to 95 ºF (-5 to 35 ºC)”
Source: relionbattery.com/products/lithium/rb20-lt
“Heating Time Approximately 1 hr @ 3 A”
Source: relionbattery.com/products/lithium/rb20-lt
Size and fit
- Weight
- 3 kg
- Weight
- 6.6 lbs
- Overall dimensions
- 7.1 x 3.0 x 6.7” (181 x 76 x 169 mm)
- Torque for the battery terminal nuts
- 35 - 44 in-lbs (4 - 5 N-m)
- Series and parallel connection
- Not in series — single use only
“Weight 6.6 lbs (3 kg)”
Source: relion-battery.s3.us-east-1.amazonaws.com/docs/product/RELiON-Data-Sheet_RB20-LT.pdf
“Weight 6.6 lbs (3 kg)”
Source: relion-battery.s3.us-east-1.amazonaws.com/docs/product/RELiON-Data-Sheet_RB20-LT.pdf
“Dimensions (L x W x H) 7.1 x 3.0 x 6.7” (181 x 76 x 169 mm)”
Source: relionbattery.com/products/lithium/rb20-lt
“Terminal Torque 35 - 44 in-lbs (4 - 5 N-m)”
Source: relionbattery.com/products/lithium/rb20-lt
“Maximum Batteries Connected in Series 1 (Single Use)”
Source: relionbattery.com/products/lithium/rb20-lt
Product identifiers
The codes printed on the product and its packaging.
- Model code
- RB20-LT
Source: relionbattery.com/products/lithium/rb20-lt
“RB20-LT 12V 20Ah Cold Weather Deep Cycle Lithium Battery”
Devices whose figures this pack does not meet
Neither maker names the other. These devices publish a draw this pack’s own maker does not rate it to deliver continuously. That is a comparison of two documents and not a manufacturer’s refusal — check both against your own equipment before deciding anything.
- Minn Kota Terrova 55 lb (54" shaft, wireless remote)Figures compared — they do not meetView device: Minn Kota Terrova 55 lb (54" shaft, wireless remote) →
Minn Kota ask for “at least a 105 amp-hour rating”, in a paragraph about lead-acid: “The motor will operate with any lead acid, deep cycle marine 12-volt battery/batteries. For best results, use a deep cycle, marine battery with at least a 105 amp-hour rating.” This pack is Cylindrical - LiFePO4. For a lithium pack the same maker's thrust-to-capacity table names a different figure for this motor: “55 lb AGM or Lithium 100Ah 2–4 hours Most common setup” Those are two of Minn Kota's own numbers for two different chemistries, and an amp-hour rating does not carry from one to the other, so they are set out here rather than compared. This pack is rated 20 Ah and 20 A continuous.
Source: johnsonoutdoors.widen.net/content/zp8zgjh29h/pdf/Terrova-BT-Installation-2327132rj.pdf
Source: minnkota.johnsonoutdoors.com/us/blog/selecting-best-trolling-motor-battery
Sources
- RELiON — RB20-LT 12V 20Ah Low Temperature Lithium BatteryManufacturer battery page
RELiON Battery
Source: relionbattery.com/products/lithium/rb20-lt
Retrieved September 15, 2026
- Archived document
Source: relion-battery.s3.us-east-1.amazonaws.com/docs/product/RELiON-Data-Sheet_RB20-LT.pdf
Retrieved October 31, 2026