IP66 vs. IP67: What Waterproof Power Bank Ratings Mean
By Robert Peterson
IP66 and IP67 describe different water tests. Both use a first digit of 6 for dust protection. IP66 addresses powerful water jets; IP67 addresses temporary immersion under specified test conditions. Neither label means a power bank can be used without limits in every wet environment.
If you are shopping for a waterproof power bank, the useful question is not simply whether the description says waterproof. Ask which rating applies to the exact model and what the instructions require you to do before exposing it to water.
Read the two digits separately
The IP Code is defined by IEC 60529. The first digit describes protection against solid foreign objects; the second describes water protection. They do not measure USB charging speed, battery capacity or how far a product can be dropped.
| Rating | Dust protection | Water test category | Practical buying implication |
|---|---|---|---|
| IP66 | Dust-tight enclosure | Powerful water jets | Do not infer immersion protection |
| IP67 | Dust-tight enclosure | Temporary immersion under defined conditions | Check the manufacturer's depth, duration and use instructions |
An immersion rating does not automatically establish resistance to powerful water jets. A product may carry both ratings when the relevant tests apply. Avoid treating the final digit as a universal toughness score.
Match the rating to the Techsmarter model
Techsmarter lists the TSBar Rugged 30,000mAh 65W as IP66. It combines a rugged enclosure with USB-C laptop charging and wireless charging, but it should not be selected on the assumption that IP66 means submersible.
The TSBar Rugged 40,000mAh 100W is listed as IP67. Its capacity and USB-C output also differ from the 65W model, so choose it for the complete specification rather than one label. Check the current product instructions for permitted exposure conditions.
Why the port cover matters
A sealed enclosure and an open charging port are different configurations. The Techsmarter rugged models discussed here require their port covers to be closed around water. A cable running through an open cover does not preserve the same sealed arrangement.
Before outdoor use, check that the cover seats fully and that sand or debris is not preventing closure. After wet conditions, move to a dry location and make sure the connectors are dry before connecting a cable. Do not intentionally immerse the product to test its rating yourself.
For rain on a trail, keep charging equipment sheltered whenever possible. For a boat or kayak, use an appropriate dry-storage plan as well as the product's rated protection. A rating should not be your only protection against losing equipment overboard.
Ruggedness is broader than water resistance
Housing design, port protection and battery capacity all affect whether a charger suits outdoor use. An IP rating alone does not prove military certification, unlimited drop resistance or suitability for every industrial site. If a workplace requires a specific equipment certification, check that requirement against documentation for the exact product.
Use the camping power bank guide to match protection with capacity and output. For laptop use, also compare 65W and 100W USB-C power banks.
Can I charge a phone while the bank is wet?
Use dry connections in a dry location and follow the product instructions. Do not interpret a water-resistance rating as permission to charge through wet ports.
Does “waterproof” mean safe in saltwater or a hot shower?
Not by itself. The term does not establish protection against every liquid, temperature or exposure. Rely on the specified rating and instructions for the model.
Find the right outdoor model: Compare Techsmarter rugged and waterproof portable chargers. If your use conditions are unusual, contact Techsmarter before ordering.
Sources and product details
IEC 60529: enclosure protection classifications; ILME technical guidance on IP66 and IP67. Techsmarter ratings are taken from the individual product pages linked above.