SKU: 60518471470

BOS LE300 Lithium Extension Battery

Sale price$7402.50 Regular price$8225.00
Save 10%

Pay in installments of $2056.25 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 29 - Aug 3

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

BOS LE300 Lithium Extension BatteryCapacity: 28Ah (Useable capacity 25. 2 Ah) 328 Wh System voltage: 12 VDC Battery: LiFePO4 Lithium Weight: 3. 4 kg Size: 175 x 229 x 67mm Works with any lead acid battery and any application LE300 Smart Battery System can be used wherever a 12 V classic lead acid battery needs to be extended. The scope and application of the LE300 is such that customers often inspire us with new ideas and possible application areas. Right from solar home systems in

  • Capacity: 28Ah (Useable capacity 25.2 Ah) | 328 Wh
  • System voltage: 12 VDC
  • Battery: LiFePO4 Lithium
  • Weight: 3.4 kg
  • Size: 175 x 229 x 67mm

Works with any lead-acid battery and any application

LE300 Smart Battery System can be used wherever a 12 V classic lead-acid battery needs to be extended. The scope and application of the LE300 is such that customers often inspire us with new ideas and possible application areas. Right from solar home systems in Africa to mobile homes and boats in Europe LE300 has touched every kind of storage application you can ever think of!

Lithium for cycling. Lead-acid for basic load.

In pure lead-acid systems batteries often fail within one to three years as batteries get damaged by continuous operation at low state of charge. Pure lithium systems perform way better and show longer lifetimes but are expensive and complicated to install. LE300 Smart Battery System turns your lead-acid system into a lithium system with special features. And the best thing about it: It only takes a few minutes to install before it can make a real impact in your storage system.

Charging & Discharging Cycle

With the LE300 hook up the lead-acid battery is kept fully charged while the cycle-resistant lithium battery takes on most charging cycles and is preferentially discharged under load. The capacity and the performance of both batteries are used optimally so you can look forward to a better performance and a longer life span of your batteries.

Longer Battery Lifetime. At Low Costs

The lithium battery takes most of the charging cycles while the lead-acid battery provides inexpensive backup capacity. The lead-acid battery is charged with higher priority while the lithium battery takes all surplus energy. This process helps to increase the lead-acid battery lifetime to up to ten years.

Robust housing for automobile. Protected against bad terrains

An elegant design and robust housing keeps the lithium batteries safe even when you are driving off-road or bad roads. Thanks to an optimised sizing and variable fixing possibilities the modules fits even in smallest of the corners. Each module is E1 certified which allows them to be installed in automobiles as well.

Please note that the LE300 is not waterproof and will need a waterproof casing (battery box) if installed in a wet/damp environment.

Easy to scale up. All your needs are covered

LE300 modules can be easily stacked together to meet your individual energy storage needs. Up to 24 (7.8kWh lithium capacity) of them on top of your present or new lead acid battery. As mentioned all your needs are covered!

Retrofit or extend your lead acid battery. Hybrid technology

LE300 Smart Battery System can be connected to any new or existing 12V lead-acid battery. Thanks to the intelligent design no additional charge controller or electrical wiring changes are needed.

Low temperature resistance. Works with any climate

All LE300 modules have an integrated cell-heater so the lithium batteries are protected against cold temperatures and perform without any energy losses. At low outside temperatures the heating can increase the cell temperature by 5 to 10 degrees Celsius.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 60518471470

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 20 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Matt S.
San Leandro, US
★★★★★ 4
Very comfortable, luxurious, and affordable.
Size: Queen (Pack of 2)
Great pillow. Feels soft enough for comfort while being cool and cozy. There could be more filling to make it slightly more firm but otherwise a great pillow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
R
Verified Purchase
Rosco
Houston, US
★★★★★ 5
Memory Foam Pillows
Size: Queen (Pack of 2)
recently purchased the OSBED Cooling Adjustable Shredded Memory Foam Pillow, and it has made a noticeable difference in my sleep quality. One of my favorite features is the adjustable fill, which allowed me to customize the height and firmness to perfectly support my neck and shoulders. Whether you’re a side, back, or stomach sleeper, it’s easy to find a comfortable setup. The cooling cover does a great job of preventing heat buildup throughout the night, which is a huge plus for anyone who tends to sleep warm. The shredded memory foam provides excellent support while still feeling soft and comfortable, and it doesn’t flatten out like some traditional pillows.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
Z
Verified Purchase
Zeba
Port Orchard, US
★★★★★ 3
Great Quality, But Not for Me (Too Heavy & Hot)
Size: Queen (Pack of 2)
I want to start by saying there is absolutely nothing wrong with this pillow—it’s well made, good quality, and exactly as described. The adjustable shredded memory foam design and cooling features will likely work well for many people. That said, it just wasn’t a good fit for me personally. Right away, I noticed that the shredded memory foam pieces are fairly large and dense, which made the pillow feel heavier than I expected. When I laid on it, it didn’t have the light, airy “cloud” feeling I prefer. Instead, it felt more solid and structured. I also found it retained heat. Even though it’s advertised as cooling, memory foam tends to hold warmth, and I could feel that fairly quickly. For someone sensitive to heat, this may be uncomfortable. If you prefer a more supportive, denser pillow, this could be a good option. But if you’re looking for something lightweight and breathable, this may not be the best choice. Overall, it’s a quality product—just not the right match for my comfort preferences.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
T
Verified Purchase
Tinker McCain
Charlottesville, US
★★★★★ 5
OSBED Cooling Adjustable Shredded Memory Foam Pillows Queen Size Set of 2
Size: Queen (Pack of 2)
The pillows were well packaged. They arrived when they said they would. The pillows are thick and they are cool. This makes for a nice long sleep night. I'm not constantly moving pillows around.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
E
Verified Purchase
Evi
Belleville, US
★★★★★ 5
Cooling pillows
Size: Queen (Pack of 2)
I was skeptical with these pillows. I received the pillows compressed. I followed the directions and within 24 hours, I had 2 beautiful fluffy cooling pillows. I was also skeptical about the cooling techniques, i was happily surprised. With the support of my neck, the comfort of the pillows. I will be getting 2 more
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026

recommand products