Good Deal 62% confidence
Available at amazon.com.
GROWATT 3686Wh Extra Battery for HELIOS 3600 Portable Power Station, LiFePo4 Expansion Battery, 9 DC Outlets for Cell Phone, PC, Tablets or Other Devices, $1098.99

amazon.com · GROWATT

GROWATT 3686Wh Extra Battery for HELIOS 3600 Portable Power Station, LiFePo4 Expansion Battery, 9 DC Outlets for Cell Phone, PC, Tablets or Other Devices, $1098.99

$1098.99 $1428.69 ↓23%

GROWATT 3686Wh Extra Battery for HELIOS 3600 Portable Power Station, LiFePo4 Expansion Battery, 9 DC Outlets for Cell Phone, PC, Tablets or Other Devices, for Home Use, Emergency, Camping and RV...

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Price History

90-day price tracking across retailers

Price History

90 days
Current
$1098.99
Lowest
$1044.04
Highest
$1571.56

Current

$1098.99

90d Low

$1044.04

90d High

$1571.56

Community Verdict

21 reviews
62% recommend
Best for

Tech enthusiasts & remote workers

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May sell out quickly

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Community-sourced deal with moderate approval. Verified available at amazon.com.

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Trust Score

Moderate 70
Historic low price No
Authorized seller Verified
Honest pricing Verified
Current model Current

True Cost

No surprises
Base price $1098.99
Shipping Free
Total $1098.99

Deal Info

Retailer amazon.com
Brand GROWATT
Category Electronics
Posted 9/7/2026
electronicsamazon