Battery Equivalents and Replacements

Odyssey PC925 Battery Series

Odyssey PC925 batteries are sealed lead-acid (SLA) absorbent glass mat (AGM) dual-purpose batteries, designed for marine, automotive, LTV, ATV, and other applications.

Odyssey PC925 batteries are durable, vibration, and mechanical impact-resistant batteries, providing good charging/discharging features in a wide temperature range, being able to produce a large starting current, tolerate a large number of deep discharge cycles, etc.

Being SLA AGM batteries, Odyssey PC925 batteries are low-maintenance batteries that can be mounted in virtually any position.

Published: January 19, 2022.

odyssey pc925 1

Odyssey PC925 Battery - Features and Specifications

Odyssey PC925 battery nominal capacity is 28 Ah (when being discharged for 20 hours). Like all lead-acid batteries, when being discharged faster, its capacity drops, and when being discharged for 10 hours, its capacity is 27 Ah - it can deliver 2.7 Amps for 10 hours.

These values are very important when powering smaller loads like LED lights, fish finders, stereo units, etc.

Reserve Capacity (value) is 48 minutes - Odyssey PC925 can deliver 25 Amps for 48 minutes, which is very important when powering medium loads, like smaller trolling motors and similar.

Despite being a dual-purpose battery, the Odyssey PC925 battery can supply 330 CCA (Cold Cranking Amps), 480 MCA (Marine Cranking Amps), 610 HCA (Hot Cranking Amps), and 900 PHCA (5 sec Pulse Hot Cranking Amps).

Due to its low internal resistance (5 mΩ), the short circuit current is ~2400 Amps - such current can make plenty of damage, so avoid short-circuiting this and any other battery.

When being used in deep-cycle applications, Odyssey PC925 can last up to 400 cycles at 80% of DoD (Depth of Discharge).

Thanks to its design, Odyssey PC925 can be stored for longer periods of time without maintenance. When being fully charged first, it can be stored 48 months at 41°F (5°C), 36 months at 59°F (15°C), 24 months at 77°F (25°C), 12 months at 95°F (35°C), and 6 months at 113°F (45°C). When being stored, as soon as the battery voltage drops down to 12 volts (35% of full charge), the battery must be fully charged, preferably with an intelligent AGM battery charger.

Odyssey PC925 battery general dimensions are (L x W x H) 6.64 x 7.05 x 5.04 inches (168.6 x 179 x 128 mm) and it weighs ~26 pounds (~11.8 kg) - weight and dimensions depend slightly on exact battery model.

odyssey pc925 m

Odyssey PC925 Discharge Performance Data

Odyssey PC925 discharge performance data is given in the following table.

Note: Values are given for the battery being discharged at 77°F (25°C) down to 10.05 volts.

Time Watts (W) Amps (A) Capacity (Ah) Energy (Wh)
2 min 2237 210.9 6.3 67.1
5 min 1412 127.2 10.6 117.7
10 min 912 80.3 13.4 152.1
15 min 686 59.8 15.0 171.6
 20 min 554 48.0 16.0 184.8
 30 min 405 34.8 17.4 202.3
 45 min 291 24.9 18.7 218.5
1 hour 234 20.0 20.0 234.0
 2 hours 129 10.9 21.9 257.8
 3 hours 90 7.6 22.9 270.8
 4 hours 70 5.9 23.6 280.0
 5 hours  57 4.8 24.2 287.3
 8 hours 39 3.3 26.1 310.1
 10 hours 32 2.7 26.7 319.0
 20 hours 18 1.5 29.3 352.7

 For example, people having fishing kayaks with small trolling motors (~20 Amps at full throttle) can expect ~1 hour of constant operation using Odyssey PC925 battery.

Also, people having fish finders, GPS, and similar devices drawing 1.5 Amps can expect ~20 hours of constant operation.

 Odyssey PC925 Battery Models

Odyssey PC925 battery models are (at the moment of writing this article): Odyssey PC925, Odyssey PC925MJ, Odyssey PC925T, Odyssey PC925MJT, Odyssey PC925L, Odyssey PC925LMJ, and Odyssey PC925LMJT.

Note: MJ abbreviation stands for 'metal jacket', T stands for 'SAE automotive terminals', L stands for 'left post positive'.

The following table lists these models and their main features:

Model Photo Description Amazon Link
Odyssey PC925  pc925 table  General use battery, featuring no metal jacket. It comes with a female brass terminal with an M6 SS bolt.  Odyssey PC925
Odyssey PC925T pc925t table  Automotive starting battery with no metal jacket and with SAE terminals. Odyssey PC925T
 Odyssey PC925MJ pc925mj table  General use, high-temperature battery with metal jacket. Odyssey PC925MJ
 Odyssey PC925MJT pc925mjt table  Automotive starting battery with metal jacket, right positive post, and SAE terminals. Odyssey PC925MJT
Odyssey PC925LMJT pc925lmjt table  Automotive starting battery with metal jacket, left positive post, and SAE terminals.  Odyssey PC925LMJT
Odyssey PC925L pc925l table  General use battery, featuring no metal jacket. It comes with female brass terminals with an M6 SS bolt. Left positive. Odyssey PC925L
Odyssey PC925LMJ pc925lmj table  General use, high-temperature battery, featuring metal jacket. Left positive.  Odyssey PC925LMJ

Note: Amazon affiliate links open in the new windows, feel free to check them for the most up-to-date prices and offers.

For very specific use, be sure to pick the right model. For general use, just pick the model that fits your terminals.

odyssey pc925lmj

Long Story Short: Odyssey PC950 batteries are not the cheapest and lightest batteries on the market in their class. But, what you pay is what you get - durable and reliable batteries that tolerate both cranking and deep cycling applications and can be fully recharged in 4-6 hours using proper AGM battery chargers.

For more reviews and recommendations, check the Odyssey PC925 Amazon link (link open in the new window).