Last updated: 10 October 2026
Battery and charging
- Reserve capacity
- 720 minutes at 25 A
“Capacity @ 25 A 720 min”
Source: relionbattery.com/products/lithium/rb300
Size and fit
- Series and parallel connection
- Up to 6 in series
“Maximum Batteries Connected in Series 6”
Source: relionbattery.com/products/lithium/rb300
Compatibility
- What the manufacturer says it fits
- sailboat, RV, or solar energy system
“Our RB300 is a lithium iron phosphate battery that's ready to replace your heavy lead-acid battery bank in your sailboat, RV, or solar energy system.”
Source: relionbattery.com/products/lithium/rb300
Product identifiers
The codes printed on the product and its packaging.
- Model code
- RB300
Source: relionbattery.com/products/lithium/rb300
“RB300 12V 300Ah Deep Cycle Lithium Battery Group 8D”
Devices documented to run on this
The figures below line up. Neither manufacturer states that this pack runs this device — that is our reading of what each of them published separately, not a claim by either of them or a test by us. Even where every stated figure agrees, these can still decide it:
- The device’s published draw is usually a peak, not the load it holds — the two numbers are not the same kind of quantity
- A maker’s amp-hour minimum and their reserve-capacity minimum can give different answers about the same battery
- Conditions attached to the chemistry, such as a speed limit for running on lithium
- Whether the pack may be wired in series at all, where the device needs 24 or 36 volts
- The charger, which both makers put conditions on and neither supplies
- Case size, hold-down and terminal type — fitting the space is not being secured in it
Worth confirming with the device's manufacturer or a dealer before buying.
- Minn Kota Terrova 55 lb (54" shaft, wireless remote)Figures comparedView device: Minn Kota Terrova 55 lb (54" shaft, wireless remote) →
One of these, on its own, at 12 V.
Only at 12 volts, and on published figures — neither maker has named the other and nobody has tested this pairing — check yours before buying.
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 300 Ah and 100 A continuous. Minn Kota attach a condition to the chemistry that no comparison of figures can settle: "speeds higher than 85% for a prolonged period could cause permanent damage to the motor".
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 — RB300 12V 300Ah Lithium BatteryManufacturer battery page
RELiON Battery
Source: relionbattery.com/products/lithium/rb300
Retrieved September 15, 2026