Comparison of XS Power Batteries With Optima
XS Power vs Optima: How RedTop and YellowTop Compare
Updated October 2026
XS Power and Optima both make 12-volt AGM batteries, and each maker publishes its own ratings. The table below puts those published figures side by side: cold cranking amps, reserve minutes and weight, plus one more rating from each maker. We carry XS Power, and each XS Power model in the table links to its page in our store.
| Brand | Model | Cold cranking amps | Reserve capacity (minutes) | Weight (lbs) | Also published by the maker |
|---|---|---|---|---|---|
| XS Power | D545 | 243 | 22 | 11.24 | 800 max amps |
| XS Power | D680 | 326 | 24 | 13.69 | 1,000 max amps |
| XS Power | D925 | 564 | 59 | 22.26 | 2,000 max amps |
| XS Power | D975 (Group U1R) | 532 | 72 | 28.5 | 2,100 max amps |
| XS Power | D1200 | 651 | 95 | 35.3 | 2,600 max amps |
| XS Power | D3400 (Group 34) | 1,012 | 160 | 49.97 | 3,300 max amps |
| XS Power | D5100 (Group 51) | 767 | 131 | Not stated (see note) | 3,100 max amps |
| XS Power | D5100R (Group 51R, reverse polarity) | 767 | 131 | Not stated (see note) | 3,100 max amps |
| Optima | RedTop 34 | 800 | 100 | 38 | 50 Ah (C20) |
| Optima | RedTop 34/78 | 800 | 100 | 38.5 | 50 Ah (C20) |
| Optima | RedTop 75/25 | 720 | 90 | 33 | 44 Ah (C20) |
| Optima | RedTop 25 | 720 | 90 | 31.5 | 44 Ah (C20) |
| Optima | YellowTop DS46B24R | 450 | 66 | 28 | 38 Ah (C20) |
| Optima | YellowTop D34 | 750 | 120 | 42 | 55 Ah (C20) |
| Optima | YellowTop D34/78 | 750 | 120 | 43.5 | 55 Ah (C20) |
| Optima | YellowTop DH6 | 800 | 140 | 54 | 72 Ah (C20) |
Each figure is the maker's own published rating, read from XS Power's and Optima's product pages in October 2026. Optima states reserve capacity at 25 amps. XS Power's product pages give reserve minutes without naming a test current, so each reserve column is that maker's own rating. XS Power publishes max amps and Optima does not; Optima publishes amp hours at the 20-hour rate (C20), and this page states no XS Power amp-hour figure. XS Power lists two slightly different weights for the D5100 and D5100R, so the table leaves their weight out.
Peak Current
The two makers publish current ratings differently. XS Power lists both max amps and cold cranking amps on its product pages: the D3400, for example, is rated at 3,300 max amps and 1,012 cold cranking amps. Optima lists cold cranking amps (800 for the RedTop 34) and does not publish a max amps figure. Cold cranking amps is the one current rating both makers publish, so it is the figure you can line up across both brands.
Sustained Current
For sustained current, Optima publishes two figures: capacity in amp hours at the 20-hour rate (C20), and reserve capacity in minutes at 25 amps. The YellowTop D34, for example, is rated at 55 Ah (C20) and 120 minutes. XS Power publishes reserve capacity in minutes on its product pages: 160 minutes for the D3400 and 95 for the D1200.
XS Power Batteries
XS Power’s D-Series instruction sheet describes its 12-volt AGM performance battery as a six-cell, sealed valve-regulated lead-acid battery, and XS Power says it uses 99.99% virgin lead.
XS Power makes D-Series, S-Series and XP-Series AGM batteries. In the XP-Series, the XP750 is rated at 750 max amps and 28 minutes of reserve capacity. The XP3000, a Group 31 battery, is rated at 3,000 max amps and 240 minutes.
Optima Batteries
Optima’s RedTop and YellowTop lines are AGM batteries. The figures here and in the table come from Optima’s own product pages.
RedTop Batteries
The Optima RedTop 75/25 and 25 models are rated at 720 cold cranking amps and 44 amp hours (C20). The RedTop 34 and 34/78 are rated at 800 cold cranking amps and 50 amp hours (C20).
YellowTop Batteries
The YellowTop models in the table run from the DS46B24R, rated at 450 cold cranking amps and 38 amp hours (C20), to the DH6, rated at 800 cold cranking amps and 72 amp hours (C20). The D34 and D34/78 sit between them at 750 cold cranking amps and 55 amp hours (C20).
Charging and Winter Storage
If your show car or audio build sits parked through the winter, both makers give you numbers to work with. Optima lists 14.4 volts as the recommended charging voltage for every RedTop and YellowTop model in the table. Optima also lists the voltage at a 100 percent state of charge: 12.6 to 12.8 volts for RedTop and 13.0 to 13.2 volts for YellowTop.
XS Power’s D-Series instruction sheet says to use an AGM charger with a maximum output of 14.4 volts for 12-volt batteries, to charge between 32 F and 104 F, and to recharge the battery when its voltage falls below 12.6 volts or after 6 months in storage.
Are XS Power Batteries Good?
The useful answer depends on your vehicle and your system. Before you buy, check the published ratings against what your build needs: cold cranking amps for starting the engine, and reserve minutes if your audio system runs with the engine off. XS Power lists both on its D-Series product pages, and a group size on units such as the D975 (Group U1R) and the D3400 (Group 34), so you can match the battery to your tray. The table above lists them for eight XS Power units we carry. For help sizing a battery to an amplifier setup, read What XS Power Battery Do I Need?
XS Power vs Optima: Choosing for Your Build
Start with the vehicle and the system rather than the brand: the group size and terminal layout that fit your tray and cables first, then the ratings in the table above. We carry XS Power D-Series, S-Series and XP-Series batteries. Browse the XS Power D-Series batteries, or call 1-877-775-4381 and we will help you match a battery to your build.