The RELiON Battery RB12 12V 12Ah Lithium Battery is a battery pack with a nominal voltage of 12.8 V, a nominal capacity of 12 Ah, 128 Wh of energy, LiFePO4 cells, a continuous discharge of 10 A, a peak of 20 A (7.5 s ±2.5 s) and a weight of 3.6 lbs (1.65 kg).
Last updated: 28 October 2026
Battery and charging
- Undervoltage cutoff
- 8.0 V (2.0 ±0.08 vpc) (100 ±50 ms)
- Cells
- Cylindrical
- Energy
- 128 Wh
- Energy printed on the battery
- 128 Wh
- Voltage
- 12.8 V
- Chemistry
- LiFePO4
- Case material
- ABS
- Internal resistance
- ≤90 mΩ @ 50% SOC
- Nominal capacity
- 12 Ah
- Maximum continuous discharge
- 10 A
- Peak discharge
- 20 A (7.5 s ±2.5 s)
- Recommended charging
- 0.5 A - 5 A
- Highest charge current it will take
- 10 A
- Recommended voltage disconnect
- 11.0 V
- BMS charge cut-off voltage
- 15.6 V (3.9 ±0.025 vpc)
- Efficiency
- 99%
- Charging voltage
- 14.2 V - 14.6 V
- How fast it loses charge sitting idle
- <3% per Month
Row from the maker’s page: “Discharge Under-Voltage Protection” | “8.0 V (2.0 ±0.08 vpc) (100 ±50 ms)”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Cell Type” | “Cylindrical”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Energy” | “128 Wh”
Source: relionbattery.com/products/lithium/rb12
“Energy 128 Wh”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Nominal Voltage” | “12.8 V”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Chemistry” | “LiFePO4”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Case Material” | “ABS”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Resistance” | “≤90 mΩ @ 50% SOC”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Nominal Capacity” | “12 Ah”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Maximum Continuous Discharge Current” | “10 A”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Peak Discharge Current” | “20 A (7.5 s ±2.5 s)”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Recommended Charge Current” | “0.5 A - 5 A”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Maximum Continuous Charge Current” | “10 A”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Recommended Low Voltage Disconnect” | “11.0 V”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “BMS Charge Voltage Cut-Off” | “15.6 V (3.9 ±0.025 vpc)”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Efficiency” | “99%”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Recommended Charge Voltage” | “14.2 V - 14.6 V”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Self Discharge” | “<3% per Month”
Source: relionbattery.com/products/lithium/rb12
Battery care and safety
- What the battery management system guards against
- 30 A (±5 A) (10 ±5 ms)
- Ingress protection
- IP66
- Short-circuit cut-off
- 200-500 µs
- Temperatures it may be charged in
- -4 to 113 ºF (-20 to 45 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)
Row from the maker’s page: “Discharge Over-Current Protection” | “30 A (±5 A) (10 ±5 ms)”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Enclosure Protection” | “IP66”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Short Circuit Protection Response Time” | “200-500 µs”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Charge Temperature*” | “-4 to 113 ºF (-20 to 45 ºC)”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Discharge Temperature” | “-4 to 140 ºF (-20 to 60 ºC)”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Recommended Storage Temperature” | “23 to 95 ºF (-5 to 35 ºC)”
Source: relionbattery.com/products/lithium/rb12
Size and fit
- Overall dimensions
- 5.9 x 3.9 x 4.0” (151 x 98 x 101 mm)
- Terminals
- F2
- Stated weight
- 3.6 lbs (1.65 kg)
- Series and parallel connection
- Sources disagree
Not in series — single use only
“Maximum Batteries Connected in Series 1”
Source: relionbattery.com/products/lithium/rb12
1
Row from the maker’s page: “Maximum Batteries Connected in Series” | “1”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Dimensions (L x W x H)” | “5.9 x 3.9 x 4.0” (151 x 98 x 101 mm)”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Terminal Type” | “F2”
Source: relionbattery.com/products/lithium/rb12
Row from the maker’s page: “Weight” | “3.6 lbs (1.65 kg)”
Source: relionbattery.com/products/lithium/rb12
Product identifiers
The codes printed on the product and its packaging.
- Model code
- RB12
Source: relionbattery.com/products/lithium/rb12
“RB12 12V 12Ah 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.” We have not recorded this pack's chemistry, and that figure is a lead-acid one — Minn Kota's table for this motor names “55 lb AGM or Lithium 100Ah 2–4 hours Most common setup” for lithium. Until the chemistry is established the two cannot be compared, so neither is offered as a verdict. This pack is rated 12 Ah and 10 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 — RB12 12V 12Ah Lithium BatteryManufacturer battery page
RELiON Battery
Source: relionbattery.com/products/lithium/rb12
Retrieved September 15, 2026