Battery Pack Holder XL · For HD Wheeley Bars Only
Larger steel cradle for big power packs — HD Medium and HD Large Wheeley Bars only.
Compatibility check before you order: The XL holder fits the HD Medium and HD Large Wheeley Bars only. It does NOT fit Standard Medium, HD Shorty, or AP Pier Mount Wheeley Bars. Even on HD Medium / HD Large, the XL won't fit if your tripod legs are at minimum extension. In that situation, mount two standard Battery Pack Holders instead.
The JMI Battery Pack Holder XL is the oversized version of our standard Battery Pack Holder. Where the standard holder accommodates packs up to 5½″ × 10″, the XL goes up to 15¾″ × 11¾″ — big enough for large marine batteries, dual-cell LiFePO4 setups, Pelican-case power boxes, or full astronomy power-distribution boxes with built-in fuse panels and outputs. Made in the USA by JMI, part of the CXB Astro family.
If your battery pack is smaller than 5½″ × 10″ in footprint and you mostly need a single power source, the standard holder ($59.40) is the better-priced choice and fits more Wheeley Bar models.
Specifications
Holds battery packs up to
15¾″ × 11¾″ (large marine batteries, dual-cell LiFePO4 setups, full power-distribution boxes)
Construction
Heavy-duty steel cradle · rimmed edge keeps the pack in place during transport · corrosion-resistant finish
Installation
Bolts to the Wheeley Bar frame using existing hardware · no drilling · about 5 minutes the first time
Compatible Wheeley Bars
NOT compatible
Made in
USA by JMI · part of the CXB Astro family
When to Choose the XL vs. the Standard
- Choose the XL if you have an oversized battery pack (large marine, Pelican-case style, dual-cell LiFePO4) or want a single cradle that handles a full power-distribution box.
- Choose the standard holder if your pack fits within 5½″ × 10″, if you own a Standard Medium / HD Shorty / AP Pier bar, or if you'd rather mount two standard holders for two separate packs.
- Mount two standard holders instead if you have an HD bar with legs at minimum extension (no room for the XL), or if you need to carry two distinct battery packs (mount power + dew heater, for example).
Frequently Asked Questions
Why doesn't the XL fit the Standard Medium Wheeley Bar?
The XL's larger footprint (15¾″ × 11¾″) needs the wider frame span of the HD Medium or HD Large Wheeley Bar to mount cleanly. The Standard Medium bar's frame is narrower and doesn't have the mounting room. If you own a Standard Medium, the standard Battery Pack Holder (5½″ × 10″) is the right fit. The XL also doesn't fit HD Shorty or AP Pier Mount Wheeley Bars.
What's the leg-extension caveat about?
On an HD Medium or HD Large Wheeley Bar with the tripod legs extended near minimum, the XL holder's footprint can interfere with frame clearance. If your tripod sits low and the bar's legs are barely extended, the XL may not fit even on the right bar. The solution: either extend the legs a bit further (often acceptable), or mount two standard Battery Pack Holders instead. The standard holder has a smaller footprint and clears the frame even at minimum leg extension.
What size packs is the XL good for?
Up to 15¾″ × 11¾″. Think large marine batteries (Group 24/27 footprint), Pelican-case-style power boxes, dual-cell or twin LiFePO4 setups, or full astronomy power-distribution boxes with built-in fuse panels and outputs. If your pack is smaller than 5½″ × 10″, the standard holder is more compact and lower-cost.
Can I use the XL for two smaller battery packs side-by-side?
If you can physically fit both packs within the 15¾″ × 11¾″ footprint, yes — but most observers find it cleaner to mount two standard Battery Pack Holders in that case. Each holder keeps its pack in its own rimmed cradle, which is more secure during transport than two packs sharing a single XL cradle.
How does the XL install?
Same installation as the standard holder. The XL bolts to the Wheeley Bar frame using the bar's existing hardware — no drilling, no extra fasteners. Most observers complete the install in about 5 minutes the first time.
Have an HD Medium or HD Large Wheeley Bar?
Add the XL holder for a serious power-distribution setup. Need a smaller cradle? See the standard version.
Standard holder Shop accessories
You may also like
Recently viewed