High-Lites 39-21 Battery Replacement 6v 4.5Ah
OSI Batteries is your One Source for replacement High-Lites emergency lighting batteries. This 6v 4.5Ah Sealed Lead Acid battery replaces High-Lites 39-21 battery.
We recommend checking your existing battery for size and specifications prior to ordering as manufacturers may change requirements without notice.
We recommend checking your existing battery for size and specifications prior to ordering as manufacturers may change requirements without notice.
| Chemistry: | Sealed Lead Acid |
| Nominal Voltage: | 6v |
| Nominal Capacity: | 4.5Ah |
| Terminals: | .187" |
| Dimensions (L x W x H): | 2.76 x 1.85 x 3.98 |
| Weight (pounds): | 1.87 |
Reviews
We're currently collecting product reviews for this item. In the meantime, here are some reviews from our past customers sharing their overall shopping experience.
4.7
Out of 5.0
Overall Rating
96%
of customers that buyfrom this merchant give
them a 4 or 5-Star rating.
October 12, 2026 by Kathy F. (WI, US)
“I wish there were lead times listed in the cart.”
October 12, 2026 by Stephen R. (NM, US)
“Easy to navigate, fai price”
October 10, 2026 by Jesse L. (TX, US)
“Easy to find what I needed, no problems checking out”
