Generation comparison

Goal ZeroYetivsYeti XSeries

This is a change of battery chemistry, not a model year — the current Yeti is rated for eight times the charge cycles of the outgoing X line.

Yeti Series

The current LiFePO4 generation.

5 models/297–1,505 Wh/0% expandable

Yeti X Series

The outgoing NMC generation.

6 models/187–6,071 Wh/67% expandable

Models compared: 115 + 6
Capacity spanned: 187–6,071Wh
Ranges overlap: 47%of the band
Genuine rivals: 2model pairs

Every model in the Yeti and Yeti X lines, drawn at true relative size and positioned by capacity from 187 to 6,071 watt-hours.

This compares two entire product lines, not two units. Get the line right and the model almost picks itself. Get it wrong and no amount of comparing model numbers will rescue the decision. Already know the two units you're torn between? Compare two products head-to-head

What each line is for

Two lines, two different jobs

Goal Zero Yeti

The current Yeti line is Goal Zero rebuilt around LiFePO4 cells. Five units, all sealed, all rated for thousands of cycles and covered by a five-year warranty, with fast switchover for sensitive equipment. It’s a deliberately narrow range aimed at people who will use a power station regularly and want it to still be working in a decade.

Goal Zero Yeti X

Yeti X is the outgoing generation, built on NMC cells. It’s the broader of the two ranges by far — reaching both smaller and very much larger than the current line — and most of it accepts expansion batteries, which the current Yeti doesn’t. What it can’t do is absorb heavy repeated cycling, and that’s a property of the cells rather than a spec that can be tuned.

The comparability question

Are these two lines even competing?

Before asking which is better, it's worth asking whether they overlap at all.

Two generations of one line, so several units map almost directly onto each other — the 1000X and 1500X have near-identical current-generation counterparts.

But whether they’re genuinely comparable depends entirely on how hard you’ll work the unit, and this is the clearest example on the site of comparability being conditional. At ten weekends a year, roughly twenty cycles, a 500-cycle rating is around twenty-five years of service and the difference between the generations is academic. Cycled daily, 500 cycles is about sixteen months, against more than a decade for the current line. Same two units, a non-issue for one reader and decisive for the other.

Fig. 1 — Every Goal Zero model in both lines, by capacity and output. The two lines form separate clusters — the narrow band where they touch is the only place the choice is genuinely close.

The short version

There's a real contested band here — 47% of the two ranges, with 2 pairs that genuinely do the same job. Inside that band it's a close call and worth reading carefully. Outside it, these stop being alternatives and start being different tools.

The deep dive

What actually separates them

Five specifications that decide which line fits — and one that doesn't.

Lifespan

A cycle is one full discharge and recharge, and the rating is roughly how many you get before capacity settles to about 80% of new. Chemistry sets this: LiFePO4 cells tolerate repeated deep cycling in a way that the older NMC chemistry doesn’t, which is why the industry moved.

Yeti

4,000

Yeti X

500

An eightfold gap, and the largest difference of any kind between two lines on this site. Translate it before deciding: at daily cycling that’s roughly sixteen months against more than a decade. At a few weekends a year, neither generation will reach its rating in any realistic ownership period. This is the number that decides whether the rest of the page matters.

Warranty

Warranty length is partly commercial and partly a manufacturer's own statement about expected service life — how long they’re prepared to stand behind the cells.

Yeti

5 years

Yeti X

2 years

The current line carries more than double the cover of the X line. Read alongside the cycle ratings, the two figures are telling the same story from different directions, and Goal Zero isn’t being coy about it.

Switchover speed

When utility power drops, a unit with UPS passthrough takes over — but not instantly. Under about 10ms almost nothing notices; slower handovers can make a desktop reboot or a CPAP alarm.

Yeti

10ms

Yeti X

not rated

The current line publishes a fast switchover figure. The X line advertises UPS capability without a rated handover time, which isn’t the same thing — if you’re buying specifically to protect a desktop or a medical device, an unquantified figure should be treated as unknown rather than assumed adequate.

Room to grow

Expandability is whether a unit accepts a second battery later. It separates a finished appliance from the first component of a larger system.

Yeti

Yeti X

67%

The one axis where the outgoing line leads, and it leads clearly: two thirds of Yeti X accepts more battery, where no current Yeti does. If a growable system is the requirement, the current line doesn’t offer one at all — which is a genuine gap rather than a quibble.

Fig. 2 — How much of each line can grow later. A sealed unit's ceiling is the box you bought; an expandable one lets you defer the capacity decision — which is the axis buyers most often discover they cared about a year on.

Carry weight

Watt-hours per pound is how much energy you get for what you have to lift. NMC cells are inherently more energy-dense than LiFePO4, which is the trade the industry accepted when it switched.

Yeti

28.5 Wh/lb

Yeti X

38.5 Wh/lb

Yeti X is the denser line, and that’s chemistry rather than engineering — it’s the compensation NMC offers for its shorter life. The current Yeti is the least energy-dense line we measure. You carry more per watt-hour to get cells that last far longer.

Balance sheet

What each line is good at, and what it isn't

Goal Zero Yeti

Strengths

Rated for eight times the charge cycles of the X line — LiFePO4 rather than NMC
More than double the warranty cover
A published, fast switchover figure for sensitive equipment
Higher solar intake relative to capacity, so it refills better off-grid

Limits

No unit in the line accepts a second battery — there’s no growable option at all
The least energy-dense line we measure, so more weight per watt-hour
Only five models, none reaching the top of the X line's range
Nothing in the line replaces the largest X units on capacity

Goal Zero Yeti X

Strengths

Two thirds of the line accepts an expansion battery, where no current Yeti does
Substantially more energy per pound — the density NMC buys
A far broader range, reaching both smaller and very much larger
Perfectly serviceable for genuinely occasional use, where cycle life never binds

Limits

Rated for 500 cycles — roughly sixteen months of daily use before meaningful capacity loss
Less than half the warranty cover of the current line
UPS capability is advertised without a rated switchover time
The outgoing generation, and currently unavailable across the entire line

How to read this

A limit isn't a fault — it's a constraint on what a line is built to do. Every line here has them, including whichever one suits you. The useful question is which set of limits you'll never notice.

The contested band

Where the lines actually collide

Models within 15% of each other on capacity — and whether they're truly interchangeable.

Yeti 1500 (6th Gen) vs Yeti 1500X

1,505 Wh / 2,000 W · 1,516 Wh / 2,000 W

Genuine alternatives

See the head-to-head

Yeti 1000 (6th Gen) vs Yeti 1000X

988 Wh / 2,000 W · 983 Wh / 1,500 W

Genuine alternatives

See the head-to-head

Yeti 500 vs Yeti 500X

499 Wh / 500 W · 497 Wh / 300 W

Same energy, different job

See the head-to-head

The verdict

So which one should you buy?

Nobody actually buys a spec sheet. Find the row that sounds most like your life — that's the line we'd point you at, and why.

Daily or near-daily use

This is exactly where 500 cycles becomes sixteen months. The chemistry decides it.

Yeti

Protecting a desktop or CPAP

The current line publishes a fast switchover figure; the X line doesn’t publish one at all.

Yeti

A system you want to expand

No current Yeti takes a second battery. This is the one thing the outgoing line does that the new one can’t.

Yeti X

A few weekends a year, nothing critical

At roughly twenty cycles a year the lifespan gap never arrives, and the X line is lighter per watt-hour.

Yeti X

The largest capacity Goal Zero has offered

The current line simply doesn’t reach that far — though check availability before planning around it.

Yeti X

Another way in

Or start from the job instead

If you already know what you need it to do, these rank models for that job across every brand we track — not just these two lines.

Best power stations for camping Best power stations for CPAP Best solar generators Best batteries for Starlink

The full lineups

Every model, if you want to see the whole range

Yeti · 5 models

Model	Wh	W	lb	Exp.
Yeti 300	297	350	13.7	—
Yeti 500out of stock	499	500	16.5	—
Yeti 700	677	600	19.3	—
Yeti 1000 (6th Gen)out of stock	988	2,000	35.3	—
Yeti 1500 (6th Gen)	1,505	2,000	52.8	—

Yeti X · 6 models

Model	Wh	W	lb	Exp.
Yeti 200Xout of stock	187	120	5.0	—
Yeti 500Xout of stock	497	300	12.9	—
Yeti 1000Xout of stock	983	1,500	31.7	Yes
Yeti 1500Xout of stock	1,516	2,000	45.6	Yes
Yeti 3000Xout of stock	3,032	2,000	69.8	Yes
Yeti 6000Xout of stock	6,071	2,000	106.0	Yes

Common questions

Goal Zero Yeti vs Yeti X series FAQs

What is the difference between Goal Zero Yeti and Yeti X?

It’s a change of battery chemistry. Yeti X uses NMC cells rated for around 500 charge cycles on a two-year warranty; the current Yeti line uses LiFePO4 rated for roughly eight times that, on a five-year warranty, with a published fast switchover figure. Yeti X leads in two places: two thirds of it accepts an expansion battery where no current Yeti does, and it’s denser per pound.

Is the Yeti X still worth buying?

It depends entirely on how often you’ll cycle it. At a few weekends a year, roughly twenty cycles, a 500-cycle rating is around twenty-five years and the newer chemistry buys you nothing you’ll live to use. Cycled daily it’s about sixteen months to meaningful capacity loss, and the current line is the only sensible choice. Note also that the whole X line is currently out of stock.

Why does the Yeti X only last 500 cycles?

That’s the NMC chemistry it was built on. NMC packs more energy into a given weight — which is why the X line is the denser of the two — but tolerates far less repeated deep cycling than the LiFePO4 chemistry that replaced it. It’s a property of the cells, not a flaw in a particular unit.

Can I add a battery to the current Goal Zero Yeti?

No. Not one model in the current line accepts an expansion battery, where two thirds of the outgoing X line did. If a growable system is your requirement, Goal Zero's current range doesn’t offer one, and that’s worth knowing before you commit to the brand.

Which current Yeti replaces my Yeti 1000X or 1500X?

The Yeti 1000 (6th Gen) and Yeti 1500 (6th Gen) sit at near-identical capacity to the 1000X and 1500X respectively. Both swap NMC for LiFePO4, so they trade some energy density and the expansion option for roughly eight times the cycle life. The overlap section on this page links each head-to-head.

Figures are generated from our catalog of 123 power stations and refresh with it — line-level values are medians across every model in the line. See how we test and score.