Battery Equivalents and Replacements

Odyssey PC680 Battery - Types, Features and Recommendations

Odyssey PC680 Battery is dual purpose AGM battery designed for powersport vehicles in mind like ATVs, motorcycles, snowmobiles and other applications that require compact yet sturdy and durable battery.

Odyssey PC680 Battery comes in several versions which are electrically identical, but differing in the level of protection, terminal types and thus physical dimensions.

Published: January 31, 2019.

odyssey pc680 1

Odyssey PC680 Battery Features and Specifications

The Odyssey PC680 battery features rugged and durable body construction, with tightly packed pure lead plates which can be practically 100% recycled.

The non-spillable AGM design and strong outer casing protect it against the shocks, vibrations and other mechanical 'wear-and-tear', allowing the user to use and abuse (up to the point, of course) this battery in various applications.

Thanks to such design, Odyssey PC680 battery has very good cranking capabilities, combined with good deep cycle performances, making it excellent dual purpose battery for various applications - it is design to withstand up to 400 cycles at 80% depth of discharge, while keeping the capacity at 80% or more of its nominal capacity.

The Odyssey PC680 battery weighs 15.4 pounds (~7 kg) and has nominal capacity of 16 Ah (20h discharge, down to 10.5 volts).

As a starting battery, it can supply 170 CCA (Cold Cranking Amps) and 520 PHCA (5s Pulse Hot Cranking Amps), making it excellent choice as starting battery for smaller internal combustion engines, commonly found at ATVs, snowmobiles and motorcycles.

The Odyssey PC680 battery can be even used as a car starting battery, BUT although this battery has plenty of starting power (at least for the battery of this size), modern cars have plenty of electrical equipment that require constant power, like alarms, GPS, onboard computers etc.

odyssey 31m pc2150 1mNote that larger internal combustion engines require more than 170 cranking amps, especially during winter - in that case, use larger battery, recommended by the vehicle manufacturer or perhaps, if they can fit your car's compartment and are compatible with the car's electric system, go for much larger and stronger Odyssey 34M-PC1500 (850 CCA) or Odyssey 31M-PC2150 (1150 CCA).

While Odyssey PC680 battery can supply such load for some time, it can't be compared with regular car batteries with much larger capacities (50-70-90 or even more Ah) in regard of low discharge applications.

If left for longer time in the car with alarm, GPS, onboard computer etc, the Odyssey PC680 battery (or any similar AGM battery) can be completely drained and even damaged, rendering the warranty void due to the misuse or neglect of the battery.

The Odyssey PC680 battery comes with two year warranty, which is very good for such small AGM battery, designed for intensive use.

The Odyssey PC680 battery features 24 RC (Reserve Capacity) minutes, allowing it to power smaller trolling motor or similar load, for limited amount of time - don't forget that this is 16 Ah battery!

Odyssey PC680 Battery Versions

The Odyssey PC680 Battery comes in several versions, shown in the following table:

Version Photo Short Description Dimensions
PC680 odyssey pc680 table No metal jacket, internal threaded brass terminals, M6 SS bolts. 

7.15 x 3.00 x 6.65 inches

181.5 x 76.3 x 167.8 mm

PC680MJ odyssey pc680mj table With metal jacket, internal threaded brass terminals, M6 SS bolts. 

7.15 x 3.00 x 6.65 inches

181.5 x 76.3 x 167.8 mm

PC680MJT odyssey pc680mjt table With metal jacket, SAE brass automotive posts with 3/8 inch internal threads. 7.15 x 3.00 x 7.5 inches

181.5 x 76.3 x 190.5 mm

PC680T odyssey pc680t table  No metal jacket, SAE brass automotive posts with 3/8 inch internal threads. 7.15 x 3.00 x 7.5 inches

181.5 x 76.3 x 190.5 mm


Electrically, these batteries are the same, differing in the presence of metal jacket, terminals/posts and height.

If you are looking for battery of this size and performances, be sure to check what terminals/posts you need!

Odyssey PC680 Discharge Performance Data

The following table lists discharge performance data of the new, fully charged Odyssey PC680 battery.

Note: since Odyssey batteries in general tolerate deep discharges, these data are given for the discharge down to 10.02 volts, and not to more commonly 10.5 volts.

Time Watts (W) Amps (A) Capacity (Ah) Energy (Wh)
2 min. 1381 129 3.9 40.8
5 min. 833 75.6 6.3 69.4
10 min. 536 47.4 7.9 89.3
15 min. 404 35.3 8.8 101
20 min. 327 28.4 9.5 109.1
30 min. 240 20.7 10.3 120.2
45 min. 174 14.9 11.2 130.7
1 hour 141 12 12 140.7
2 hours 78 6.6 13.2 156.6
3 hours 55 4.6 13.9 164.9
4 hours 43 3.6 14.3 170.5
5 hours 35 2.9 14.7 174.7
8 hours 23 2.0 15.7 187.2
10 hours 19 1.6 16 191.4
20 hours 10 0.9 17.1 204.9

When being discharged down to 10.02 volts for 20 Ah, capacity of the Odyssey PC680 battery is 17.1 Ah.

However, its nominal capacity is 16 Ah since nominal capacity is measured when the battery is being discharged down to 10.5 volts.

Odyssey PC680 Battery as the Fish Finder Battery

odyssey pc680 2Many fishermen use dedicated AGM batteries for powering their fish finders when going on the fishing trips, sparing their starting batteries for cranking only duties.

Typical high-end fish finder draws on average 1.5 Amps during use, which means that fully charged Odyssey PC680 battery can power such device for at least 10 hours.

Smaller fish finders require less power, often under 0.6 - 0.5 Amps and such units can be powered using Odyssey PC680 battery for more than a day, constantly.

Some lighter AGM batteries (even 5 pounds less than PC680 battery) feature similar or even better electrical performances, but such batteries are not as reliable, rugged and durable as Odyssey PC680 battery.

For more about this topic, please check our Choose the Best Fish Finder Battery article (link opens in the new window).

Long Story Short: Odyssey PC680 battery has good starting performances, tolerates deep cycling operation, comes with 2 year warranty and at affordable price, considering all its features.

Regardless if you need a staring battery for smaller internal combustion engine (ATV, snowmobile, motorcycle, boat), or good fish finder battery, or UPS battery, or some similar application, consider Odyssey PC680 battery.

For more reviews and recommendations, check Odyssey PC680 Battery Amazon link (link opens in the new window).