Compatibility
Both batteries in this set are direct replacements for the Coolest Cooler Blender battery. They fit the original compartment with no modification. Add our BAT101 24V 1A charger so you can top up the spare while the other is in use, or start with the single battery if you only need one. All BAT101 packs share the same form factor and charging profile.
Why Two Batteries Beat One
A single battery gives you about 20–30 minutes of blending. For longer outings — a full day at the lake, a weekend camping trip, a busy tailgate — that may not be enough. The two-pack eliminates downtime: when one pack is depleted, swap in the second and recharge the first at home later. You essentially double your total blending time without ever standing around waiting for a charge.
New, Not Rebuilt
Like all Vonblay batteries, these are brand-new units, not refurbished or rebuilt packs. You avoid the weeks-long turnaround of mail-away rebuild services and get full rated capacity from day one. Both packs are capacity-tested before they ship, so the set you receive performs as a matched pair.
Ideal Use Scenarios
The two-pack shines at group events: family reunions, beach parties, fishing trips, and RV weekends where multiple people want smoothies or frozen drinks. Having a charged spare means the blender stays in service while the other pack tops up off-site.
Care & Maintenance Tips
Rotate between the two packs so neither sits depleted for long. Store both at room temperature, keep contacts clean, and recharge every couple of months during off-season storage. The built-in protection circuit in each pack helps prevent over-discharge damage.
What’s in the Box
- 2 × BAT101 21V 2100mAh Li-ion batteries
Warranty & Support
The two-pack is covered by a 12-month warranty on both batteries. Our team is available to help with any fit or performance questions.
Who Should Choose the Two-Pack
Pick the two-pack if you regularly blend for a group, take the Coolest Cooler on multi-day trips, or simply hate waiting for a recharge. Two fresh packs mean you can keep serving drinks while the other charges at home.
Shipping & Delivery
Both batteries ship together within one to two business days, fully tracked. Standard international shipping is available for customers outside the United States. Please allow 8–15 days for delivery after your order ships.
Frequently Asked Questions
Do both batteries work with the same charger? Yes — both use the standard BAT101 spec and charge with the same 24V 1A charger.
How much total runtime do I get? With two packs you can blend roughly 40–60 minutes total before both need recharging, swapping in seconds between them.
Are the two batteries identical? Yes, both are new BAT101 21V 2100mAh packs with the same specifications.
This bought my Coolest Cooler back to life, and since I have bought another Coolest Cooler since I know I can get a battery replacement for it!
Decided to try this instead of buying a new cooler and the twin batteries keep the cooler running all weekend. Solid build quality, feels OEM. Fitment was spot on with the BAT101 spec.
Got this to replace the dead stock pack and swapping to the second pack mid-day is effortless. Shipped fast and works as described. Charges from a power bank when we’re off-grid.
Needed a backup for weekend camping trips and the 2PCS set is great value for the price. Now I keep one in the cabin and one at home. No weird smell or heat during charging.
Needed a backup for weekend camping trips and swapping to the second pack mid-day is effortless. Made our cooler great again. Lighter than I expected for the capacity.