Portable Battery Backup Comparison: Goal Zero Yeti vs. Kisae

Portable Battery Comparisons
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Kisae vs. Goal Zero emergency solar battery comparison

Portable batteries can provide emergency power without breaking the bank. They can also add a bit of luxury to your outdoor adventures or road trips by extending the life of your electronics and/or appliances.

However, the power at your disposal and the ease of use depend on the battery. Many companies have come out with potable battery backup options, making the decision difficult.

Goal Zero and Kisae both offer emergency battery backup options. We hope this product comparison helps you make an informed judgment about the best portable battery for your situation.

Comparing Battery Types: Lithium-ion vs.  Sealed Lead Acid

The first thing to consider when looking at battery backup is the battery type. Goal Zero and Kisae use different battery technology for their emergency battery products.

Goal Zero uses NMC lithium-ion batteries in all of its Yeti Portable Power Stations. Kisae uses sealed lead acid battery technology for its line of portable batteries.

Lithium-ion Batteries: Nickel Manganese Cobalt

Most lithium-ion batteries have the same components and structure. The difference comes from the material used for the cathode.

Lithium-ion batteries that use nickel manganese cobalt (NMC) for the cathode. They have become the preferred battery type in electric vehicles and home batteries. This battery type has higher energy density and longer life cycles.

Sealed Lead Acid Batteries

Lead-acid batteries are among the first rechargeable batteries. These batteries typically get used because of their cost-effectiveness.

However, they have several other factors worth considering. First, they have a shorter life cycle. Additionally, with each full discharge, they lose some energy capacity. This battery type also has lower energy density making it heavier than other battery chemistries, and its high lead content makes it environmentally unfriendly.

One good thing about this battery type is it doesn’t self-discharge as fast as other battery types. Sealed acid batteries vent during charge, discharge and pressure changes, reducing battery maintenance. 

Important Battery Specs Worth Comparing

While battery types have a range they typically work within, each battery has specs specific to it. Goal Zero carries portable power stations that range between 150 and 6,000 watts. Kisae has emergency backup systems between 400-1,800 watts and portable battery backup options between 100 watts and 800 watts.

Go Solar Group carries the Yeti 1500 and 3000. For a fair comparison, we will compare these battery options to the Kisae HS1800.

In this comparison, we will look at specs those considering emergency backup solutions should consider. These ratings include power ratings, instantaneous power ratings, usable capacity, roundtrip efficiency, dimensions, weight and cycles.

Yeti 3000 and 1500 Portable Battery Specifications

Capacity and Power

The Yeti 3000 can store up to 3075 watts and the Yeti 1500 can store up to 1516watts. Both can discharge up to 3500 watts of surge power through the AC inverter port.

Weight and Dimensions

The Yeti 3000 with the included MPPT charger weighs 68.6 lbs. The cart that carries this battery weighs an additional 8.9 lbs. It takes up 10.1 x 15.3 x 13.1 in. The Yeti 1500 weighs 45.64 lbs and takes up 15.25 x 10.23 x 10.37 in.

Efficiency, Cycles and Charging Ports

The Yeti 3000 and the Yeti 1500 maintain at least 80 percent of the charge for 500 cycles. They also have eight different output ports, two input ports, and a port for adding additional storage.

Kisae 1800 Watt Emergency Backup Battery 

Capacity and Power

Kisae’s HS 1800i will store up to 1800 watts. It can discharge up to 1800 watts of continuous power and 3600 watts of surge or peak power.

Weight and Dimensions

The HS 1800i weighs 76 lbs and takes up 14.5 x 10.5 x 14.0 in. of space. It’s heavier than both the Yeti options but close to the same size.

Efficiency, Cycles and Charging Ports

The HS 1800i has 90 percent peak efficiency. Kisae doesn’t specify how many cycles this battery can handle. Additionally, it only has four AC output ports and a couple of ports for adding storage and charging either with an outlet or with solar panels.

Comparing Portable Battery Warranties

While it’s best if the product doesn’t have an issue, sometimes goods don’t work as promised. A quality warranty offers peace of mind against the off chance of a malfunction. Both Kisae and Goal Zero offer battery warranties.

Kisae Battery Warranty

Kisae offers a one-year limited warranty. It will replace the unit if it breaks within the first 30 days of purchase. If it breaks between 30 days and a year, Kisae will fix it.   

Yeti Portable Battery Warranty

Goal Zero offers a two-year limited warranty on new products and six months on open-box purchases. It also has a 30-day money-back guarantee for unopened products.

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