Lifeline Premium Sealed Batteries - 6V.300AH Lifeline Battery | GPL-6CT
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Premium Sealed Batteries
6V.300AH Lifeline Battery
- Aviation-standard cell construction lowers internal resistance for high repeated engine start current withstands shock and vibration much better than standard flooded or gelled electrolyte designs
- Twice as many discharge/charge cycles as the leading gel battery
- Faster recharge, no current limitations with voltage regulated recharging
- Much better charge retention than low cost, flooded cell types
- Full recharge after 30 days storage in a full discharge condition
- Less than 3% per month self discharge
- Sealed construction with absorbed electrolyte - no shipment restrictions, submersible without damage; install in any position; no need for watering
- Rugged, non-marring polypropylene case/cover
- Safe: even during severe overcharge the LIFELINE AGM battery produces less than 2% hydrogen gas. (4.1% required for flammability in air).
Freight Alert: Overweight
- Brand: Lifeline
- Manufacturer part #: GPL-6CT
- Sold as: EA
- Catalogue: Western Marine 02-137 – Batteries & Accessories
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.