The LiTime 12V 20Ah Marine Starting is a battery pack with 256 Wh of energy, dimensions of 7.76 × 5.2 × 6.69 inch, a stated charge of 14.4 V CC/CV, 10 A recommended and an ingress rating of IP67.
Last updated: 11 September 2026
Battery and charging
- Energy
- 256 Wh
- Internal resistance
- 40 mΩ or less
- Recommended charging
- 14.4 V CC/CV, 10 A recommended
- Series and parallel limit
- It may not be combined with anything
- Most it will take from an alternator
- 80 A from an alternator against 30 A from a charger
- Most it will take from a charger
- 30 A from a charger; 10 A is what they recommend
- Cranking amps, hot, marine and cold
- 900 A hot, 810 A marine, 650 A cold
“Energy 256Wh”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
“Internal Impedance ≤40mΩ”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
“Charge Voltage 14.4V±0.2V”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
“Max. Expansion No Series, No Parallel”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
“Max. Charge Current Outboard Alternator: 80A Charger: 30A”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
“Max. Charge Current Outboard Alternator: 80A Charger: 30A”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
“Hot Cranking Amps (HCA) 900A Marine Cranking Amps (MCA) 810A Cold Cranking Amps (CCA) 650A”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
Battery care and safety
- Ingress protection
- IP67
- What the maker says it is NOT for
- Starts, not cycles — no cycle life is published
- Where to install it
- In a waterproof box or raised above the bilge
“This product supports IP67 protection. To avoid potential issues, it is recommended to install the battery in a waterproof battery container and/or position it at a higher level. This will prevent the battery from being partially or wholly submerged in the water accumulated at the bottom of the boat.”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
“Cranking Times ≥5000”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
“This product supports IP67 protection. To avoid potential issues, it is recommended to install the battery in a waterproof battery container and/or position it at a higher level. This will prevent the battery from being partially or wholly submerged in the water accumulated at the bottom of the boat.”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
Size and fit
- Overall dimensions
- 7.76 × 5.2 × 6.69 inch
- Torque for the battery terminal nuts
- 7 to 9 N·m
“Dimension L7.76*W5.2*H6.69 inch”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
“Recommended Terminal Torque 61.96 to 79.66inch·lbs/ 7 to 9 N·m”
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
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 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
- LiTime 12V 20Ah Marine Starting — Product ManualArchived document
Source: cdn.shopify.com/s/files/1/0667/7220/5788/files/LiTime_12.8V_20Ah_Marine_Starting_Battery_-_User_Manual.pdf
Retrieved September 11, 2026