How do I know my charger tip size?

For example, the output for the laptop charger above is 19.5V x 3.33A. And the formula is Wattage = Voltage x Ampere, which means the charger’s output is:

Voltage: 19.5V
Ampere: 3.33A
Wattage: 65W (rounded up from 64.9)

Just for the sake of getting a replacement, you’ll want your output specs to be exactly the same for your original and replacement laptop charger.

But if you must know, only the output voltage needs to be the same (or not more than 1V difference from your original laptop charger).

For Ampere and Wattage, they CANNOT be lower. But you can use chargers with higher Ampere and Wattage. (Explained in the FAQ section below.)

In summary:

1. Look at your original AC adapter. Find its “Model” so you can look for replacements on Google.
2. Check your original laptop charger’s pin diameters and output, and compare them with specs from online marketplaces. Make sure they are the same.

Now you know how to find the right laptop charger to replace the old one, it’s time to pick the best one to fulfill your needs.

Unlike a AC inverter generators the Voltaic V88 Laptop Battery uses DC power to charge electronics away from the grid. While this will not effect how you charge USB devices such as smartphones and tablets, an adapter is required in order to charge laptops. This laptop adapter guide will help you find the correct DC adapter for your laptop.

Choosing the Correct DC Adapter for Your Laptop

Unless your laptop charges from a USB Type C cable, you’ll need to use a Voltaic adapter to charge from one of our solar laptop chargers or the V88 Portable Laptop Battery. The style and size of your laptop adapter will be determined by a couple of factors including your computer’s brand, model and year.

The size of your laptop adapter is defined by its Outer Dimension, Inner Dimension and Center Pin Size (if applicable). These dimensions are measured in millimeters.

For a precise measurement, we recommend using a pair of calipers. However, since most laptop brands have a ‘large’ and a ‘small’ adapter, a quick measurement of the Outer and Inner Dimensions with a standard ruler will help you decide which adapter you need based on our glossary below. Due to the large variety or model numbers, this is a partial glossary.

Standard vs. Optional Laptop Adapters

A set of 10 adapters is included with any purchase of a V88 Laptop Battery or a Solar Laptop Charger.

Adapters which are included as Standard Adapters are marked as “Standard”. If the adapter is marked as “Optional”, you must purchase that adapter along with your laptop solar charger in order to charge from the Voltaic V88 Battery.

Search Adapters by Top Brands:

Acer Laptop Adapters

Acer laptops will charge from either their Small Pin (3.0 x 1.0 mm) or Large Pin (5.5 x 1.7 mm) Adapter.

Apple Laptop Adapters

Unlike other laptop adapters, Apple MacBooks use a proprietary MagSafe cable or a Thunderbolt (USB-C) cable to charge. To determine which adapter you need, please use the chart below:

For more information on charging your MacBook from solar, visit our Solar MacBook Guide.

Asus Laptop Adapters

Asus laptops will charge from one of two adapter, our standard “C” Adapter (5.5 x 2.5 mm) or our optional 4.0 x 1.35 mm Adapter.

Dell Laptop Adapters

Suggested reading:
Energy

Dell laptops will either charge from our standard “DELL” Adapter (7.4 x 5.0 x 0.6 mm) or our optional Dell Right-Angle Adapter (4.5 x 2.8 x 0.6 mm).

E Port Plus; Inspiron 15 75XX, 7720, M5110, One 2020; Latitude 3340, E4310, E5430, E5440, E5520, E5530, E6230, E6320, E6330, E6420, E6430, E6440, E6530, E6540, E7240, E7440; Precision Mobile Workstation M2400, M2800, M4400, M4500, M4700, M60, M6700, M70, M90; XPS 14, 15, 17

Chromebook 7310; Inspiron 13 7348, 14 3467, 15 3567, 15 7558, 3452, 3458, 5559, 5758; Latitude 3490, 3590; OptiPlex 3020 (micro); Vostro 3252, 3459

NOTE: HP and Dell adapters have the small measurements but are not interchangeable.

HP Laptop Adapters

If you are charging an HP Laptop, you will require an additional adapter. Most newer style HP laptops will charge from the optional HP Right-Angle Adapter (4.5 x 2.8 x 0.6 mm). If you have an older HP Business laptop you will likely need our optional HP Adapter (7.4 x 5.0 x 0.6 mm).

NOTE: HP and Dell adapters have the small measurements but are not interchangeable.

Lenovo Laptop Adapters

Most Lenovo laptops will charge from one of our included standard Lenovo adapters: Lenovo Square Adapter (10.5 x 4.2 mm),  “G”  Adapter (4.0 x 1.7 mm) or “K” Adapter (7.9 x 5.6 x 0.9 mm). However, some Lenovo’s will require the optional Lenovo Slim Tip Adapter (7.5 x 3.0 mm).

ThinkPad T W Series

Microsoft Laptop Adapters

Microsoft Surface, Surface Book, and Surface Pro laptops use a proprietary cable to charge. To determine which adapter you need, please use the chart below:

Surface

Surface

Surface

Surface

Samsung Laptop Adapters

If you have a Samsung laptop you will use either our standard “H” (2.5 x 0.7 mm) or “C” Adapter (5.5 x 2.5 mm).

Toshiba Laptop Adapters

Toshiba laptops have three distinct adapters, two of which are part of our standard set: “G” Adapter (4.0 x 1.7 mm) and “C” Adapter (5.5 x 2.5 mm). Alternatively, some Toshiba laptops will charge from our larger “B” Adapter (6.3 x 3.1 mm), this adapter is not part of the standard set.

Other Laptop Adapters

If you do not see your laptop brand listed above and do not have the pin size of your laptop, please contact our technical support team directly at the link below.