Shipping Estimate
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- USA
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
OSET 20R 48V 25Ah Lithium Ion Battery Pack Including Smart ChargerHigh quality 25Ah upgrade battery pack to suit all 48V OSET models. This battery pack will DRAMATICALLY improve the handling and performance when compared to the standard SLA (Sealed Lead Acid) batteries. They are less than 1 3rd of the weight, now last up to 5X longer. A high quality 3hr fan cooled smart charger is supplied as standard with this kit. Our lithium battery packs are fully automatic and come ready to use, no need to worry about balancing
High quality 25Ah upgrade battery pack to suit all 48V OSET models. This battery pack will DRAMATICALLY improve the handling and performance when compared to the standard SLA (Sealed Lead Acid) batteries. They are less than 1/3rd of the weight, now last up to 5X longer. A high quality 3hr fan-cooled smart charger is supplied as standard with this kit.
Our lithium battery packs are fully automatic and come ready to use, no need to worry about balancing cells, the built-in battery management system offers the user all the safety features but without the hassle.
Simply plug into the bike using the supplied spade adapter, enjoy, recharge and you're ready to go again.
Summary of Li-Ion advantages compared to Lead Acid
- Higher Voltage in Lithium-Ion over Lead Acid, 3.7v vs 2.0v (almost 2x).
- Greater Energy Density per unit Weight (3x), Volume (6x).
- Lighter / Smaller providing more portability.
- Tolerates Higher Temperatures (60 degC vs 27 degC).
- Faster recharge time, and more time between recharges.
- Higher Charge Efficiency (97% vs 75%).
- More Discharge Cycles (3x).
- Deeper Discharge Tolerance (95% vs 50%) – Can offset cost due to shallow Lead Acid discharge.
- State of Health and the State of Charge can be readily monitored.
- Replacement timeframe, Li-Ion 3-5 years Lead Acid 1.5 - 2 years.
Capacity 21Ah
Approximate Dimensions: 200mm x 175mm x 110mm.
Approximate Weight: 5.2kg.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.7 ★★★★★
Based on 1945 reviews
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Product Reviews
★★★★★ 5
Eufy 11S Max Replacement Parts Work Well
Size: 20 PACK
For the 11S Max, the parts fit great. Changing out the parts is easy, and the parts are durable. I like that this kit has a new filter for everytime you change out the rotating brushes. Changing out the parts make the eufy vacuum cleaner function better everytime. I can’t tell a difference in the noise level when changing out the parts. Overall, thus is totally worth the money to keep the Eufy running in its best shape.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
Great buy
Size: 20 PACK
This is a great buy to replace filters etc on my robot
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Perfect for my Eufy
Size: 20 PACK
Nice to change out parts regularly. Easy to use. Fit & work perfectly
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Reviewed in the United States on November 17, 2025
★★★★★ 4
Great replacement for TCL robot vacuum
Size: 20 PACK
Love that everything fits. Only issue are the little brushes they don’t fit the vacuum I have :(
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Reviewed in the United States on June 17, 2024
★★★★★ 5
Perfect replacements for the G30
I wanted to replace the filters in my old G30 more frequently, as it's still running like a champ. I figured keeping up on it more often would help prolong its life expectancy. So far, so good. The less expensive replacement parts definitely help me not get upset every time I want to replace something. All parts from this pack fit perfectly, and the price is reasonable enough to avoid pushing replacements to the very last minute—at least it did for me, lol.
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Reviewed in the United States on July 10, 2024
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