Home /Goal Zero /Expansion Batteries /Goal Zero Tank Pro 4000 Expansion Battery – Modular Home Backup Storage for Yeti PRO 4000 (Up to 4 Units)

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Expansion Batteries

Goal Zero Tank Pro 4000 Expansion Battery – Modular Home Backup Storage for Yeti PRO 4000 (Up to 4 Units)

Name: Goal Zero Tank Pro 4000 Expansion Battery – Modular Home Backup Storage for Yeti PRO 4000 (Up to 4 Units)
Brand: Goal Zero
SKU: POW-EXP-277
Price: 100 USD
Availability: InStock
Rating: 4.3 (3 reviews)

4.3 (3)

$1,999.95 $100.00

The Goal Zero Tank Pro 4000 is a modular expansion battery that stacks up to four units per Yeti PRO 4000 for multi-day home backup, and at $100.00 (slashed from $1,999.95) it's the discounted online buy to scale your power system.

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8 people are viewing this item. 16 sold today. Only 4 left in stock.

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Pair withGoal Zero Tank PRO 6 ft. Extension Cable – QS10 Male-to-Female Connector for Yeti PRO 4000$17.49

Categories : Expansion Batteries

SKU : POW-EXP-277

Description

The Goal Zero Tank Pro 4000 is a modular expansion battery that builds out your home backup system — connect up to four Tank Pro 4000 batteries to one Yeti PRO 4000 to run essentials for days on end. At $100.00, down from a $1,999.95 compare-at price, this is the deal-driven moment to buy expansion capacity online.

Specifications

Key Specs

Brand: Goal Zero
Model: Tank Pro 4000
Product Type: Modular expansion battery
Scalability: Up to 4 Tank Pro units per Yeti PRO 4000
System Use: Multi-day home essential backup

Modular Scalability

Not sure how much power you need? Start with one or two expansion batteries and add more later as your needs change — the system grows with you.

Use Cases & Comparisons

Ideal for outage backup, off-grid cabins, and worksites. Compared with fixed-capacity power stations, the Tank Pro 4000 lets you buy capacity incrementally at today's discounted price.

Price & Deal Value

$100.00 sale vs $1,999.95 compare-at — a discount of over $1,899. Stack coupon OUTPOST12 for 12% more savings. Note: oversized item; free shipping applies on orders over $45.00 where eligible.

Features

Modular expansion battery — connect up to 4 Tank Pro 4000 units per Yeti PRO 4000
$100.00 deal price — save over $1,899 off the $1,999.95 compare-at, plus 12% with coupon OUTPOST12
Scale now, expand later — buy the capacity you need today and add more when needs change
Model: Tank Pro 4000
Category: Expansion Batteries
System Role: Multi-day home and off-grid backup capacity
Product Type: Modular expansion battery
Max Units per Yeti PRO 4000: 4
Seller: PowerHaven Outpost
MPN: Tank Pro 4000

Product Details

Build Backup Power in Modules

The Goal Zero Tank Pro 4000 grows your Yeti PRO 4000 system one battery at a time — run essentials for days by stacking up to four units.

Fixed vs Modular Comparison

Fixed high-capacity units lock you into one size and price. The Tank Pro 4000 lets you start small and expand affordably, especially at today's $100.00 sale price vs $1,999.95.

Deal Details

$100.00 sale price, extra 12% savings with coupon OUTPOST12, free shipping on orders over $45.00 where eligible (oversized item).

Frequently Asked Questions

Can the Goal Zero Tank Pro 4000 be used as a standalone power station?

No — the Tank Pro 4000 is an expansion battery designed to add capacity to a Yeti PRO 4000, which provides the inverter and outputs.

How many Tank Pro 4000 batteries can I connect to a Yeti PRO 4000?

Up to four Tank Pro 4000 expansion batteries can be combined with one Yeti PRO 4000 for days of backup power.

How long does it take to charge the Goal Zero Tank Pro 4000?

Charging time depends on input source and number of attached batteries; pairing with high-wattage solar or the HPP input delivers the fastest recharge of the combined system.

What is the warranty on the Goal Zero Tank Pro 4000?

Tank Pro 4000 batteries are covered by Goal Zero's manufacturer warranty; check warranty documentation included with your purchase for full terms.

Where can I buy it at a discount?

PowerHaven Outpost has it on sale for $100.00 vs $1,999.95 compare-at. Use coupon OUTPOST12 for an extra 12% off at checkout.

Customer Reviews

3

5.0

u*u

Verified

Doubled my runtime effortlessly

Stacked one Tank Pro under my Yeti PRO 4000 and it just worked — connected and syncing in seconds. We went from overnight backup to nearly two days running the fridge, freezer, and internet. The modular stacking is genuinely clever. If outages are common where you live, add at least one of these.

5.0

v***r

Verified

Plug and play capacity

Connected it, it synced, done. No configuration headaches.

3.0

l****s

Verified

Heavy and the app needed a nudge

The battery works great once connected, but it's a two-person lift to position, and my Yeti didn't detect it until a firmware update through the app. After that, flawless charging and discharging. Just be ready for a little setup friction.