A YTX30L-BS is a 12-volt, 30-Ah AGM battery about 6.54 x 4.96 x 6.89 inches, and the codes commonly listed as equivalents are not automatic swaps.
Two batteries can both carry the YTX30L-BS label and still not work in the same machine — one is a 30-Ah sealed AGM pack, the other a 10-Ah lithium block with its own charging demands. A YTX30L-BS battery cross reference comes down to six items: length, width, height, cold-cranking amps, terminal style, and polarity. The table below maps the aliases sellers print and flags what each one leaves out.
YTX30L-BS Cross Reference: Which Specs Decide Fit
The label describes a 12-volt, 30-Ah case built to matching outside dimensions across most brands. Fit is decided by the numbers on the case plus two details shoppers skip: terminal style and polarity.
The common sealed AGM version measures about 6.54 x 4.96 x 6.89 inches and weighs 18 to 21.4 pounds depending on the maker. Most listings rate it at 385 CCA; a few claim 400. Terminals are typically nut-and-bolt, with the negative post on the left and positive on the right when viewed from the terminal side.
| Listed Code | What Listings Usually Describe | Verify Before Ordering |
|---|---|---|
| YTX30L-BS | 12 V, 30 Ah sealed AGM, commonly 385 CCA | Case height and polarity against the old battery |
| YTX30L | The same case family without the -BS suffix | Dimensions, since sellers use suffixes loosely |
| YIX30L-BS | Interchange code sold alongside the YTX label | Terminal style and CCA rating |
| ETX30L / ETX30LA | Aftermarket cross-reference to the same size | Terminal layout, which varies by brand |
| CYIX30L-BS | Seller alias for the 30L case | Chemistry and listed weight |
| CB30L-B, C30L-B, 30L-B | Short codes for the same case family | Mounting clearance and hold-down fit |
| M22H30 | Another alias used in cross-reference charts | Voltage and Ah, not just the code |
| Lithium under the same label | 12.8 V, 10 Ah, 700 CCA on one Weize pack | Charger and charging-system compatibility |
A case too tall for the hold-down, or a reversed terminal set, does. Shipping matters too — some listings are dry batteries with an acid pack, others factory-sealed and activated; a dry one needs filling and charging before it will start anything.
Is A YTX30L-BS The Same As A YIX30L-BS?
No. YIX30L-BS, ETX30L, ETX30LA, CYIX30L-BS, CB30L-B, and M22H30 are cross-reference labels pointing at the same 30L case family, and the batteries behind them can differ in plate design, terminal style, and cranking amps. Cross-reference charts are seller shorthand, not a fitment guarantee. The authority is the code printed on the battery you are removing, or the one in the owner’s manual.
Chemistry is the difference that catches people out. A lithium pack sold under the same label is not electrically identical to lead-acid: Weize’s YTX30L-BS lithium specification lists 12.8 V, 10 Ah, and 700 CCA, against 12 V, 30 Ah, and 385 CCA for the AGM version. Amp-hours drop by two-thirds, and a lead-acid charger may never fully charge the pack.
Our tested YTX30L-BS battery roundup puts the current AGM picks side by side.
How To Check Fit Before You Install
Match the replacement against the old battery on dimensions, terminal layout, polarity, chemistry, and the Ah and CCA rating your machine calls for. Miss any one and the new battery is the wrong battery, whatever the chart said.
- Read the code on the old battery or in the owner’s manual, not on a cross-reference chart.
- Compare length, width, height, and hold-down position against the original case.
- Confirm 12 volts, then check that Ah and CCA meet or beat the machine’s spec.
- Match terminal style and polarity; a reversed connection can arc and damage the harness.
- Keep the charger matched to the chemistry — AGM with AGM, lithium with lithium.
- Seat the battery in the tray, fit the hold-down, and check that both cables reach without stretching.
Buy by measurements and ratings, use the code as a starting point, and check polarity with a meter before the terminals go on.
Common Questions
What Is The Difference Between YTX30L-BS And YTX30L?
Sellers use both spellings for the same 30L case, and the suffix is not standardized. Some add -BS to note a sealed, activated battery, others drop it for the same product. Treat them as the same size family, then confirm dimensions, terminal style, and chemistry on the listing rather than trusting the suffix.
Can A Lithium Battery Replace A YTX30L-BS AGM?
Only when the machine and its charging system are rated for lithium. A lithium pack under the same label can list 12.8 volts, 10 Ah, and 700 CCA, against 12 volts, 30 Ah, and 385 CCA for the sealed AGM version. Check the vehicle maker’s guidance and use a lithium-specific charger before swapping chemistries.
How Do I Confirm A YTX30L-BS Fits My ATV Or Motorcycle?
Start with the code on the battery you are removing or in the owner’s manual. Measure its length, width, and height and compare with the replacement’s listed dimensions — about 6.54 x 4.96 x 6.89 inches for the standard AGM. Check terminal position and polarity, and make sure the hold-down closes over the new case.
Sources
- Weize. “YTX30L-BS 12V 30Ah Motorcycle Battery” Source for the lithium pack’s 12.8 V, 10 Ah, 700 CCA rating and case dimensions.
- Zoro. “Mighty Max Battery 12 Volt 30 Ah 385 CCA AGM Sealed Lead Acid Battery YTX30L-BS” Source for the $91.59 AGM listing and its 385 CCA rating.