Transpring is a manufacturer with an experienced R&D team, we have helped with many customers with their OEM & ODM projects. All steps for you to start an ODM & OEM business are just to contact us!

Usually, it takes 1-1.5 hours for a 510 battery to be fully charged. But with Transpring C1 fast charger and C2 fast charger, you are offered a quick charging experience. By only 20 minutes the battery can be charged 80%, and 40 minutes to full charging.

Two charging ports are available: a micro USB port and a 510 threaded USB port. 510 thread USB charger is compatible with most products.

We suggest you vape your battery entirely dead on this initial charge before you put it on the charger for the first time.

The specific answer to this question varies based on your individual habits and the battery is heating at what voltage (often related to temperature). Typically, a battery with a rating of 650 mAh will need to be recharged after 18 hours of intermittent use.

Yes, our cartridges are refillable. The procedure for refilling the oil is almost the same as the first time.

This usually depends on the state of your oil. If, for any reason, your oil is thick or appears to be crystalline and solid, then we recommend turning on the preheat mode.  In the opposite case, you can ignore this step.

The general vape pen preheating setting is 15s. You can heat it for 15 seconds first, drop the oil and wait for a few seconds because the heat will gradually increase the temperature of the concentrated liquid.

The quality of our products will be strictly controlled. Compensation will be provided if your order contains defective products. You will also receive assistance if this is caused by your improper operation.

1. You can contact us via Live Chat on our website, email info@transpring.com or call +86-13670043215 for a quotation. Remember to tell us the model, quantity, color, battery capacity, etc.

2. Tell us your shipping details if there is no problem with the price. I will send you the PI to confirm.

3. Producing and shipping will be arranged soon after payment.

4. Tracking number will be provided, and tracking frequently for you!

We usually quote within 24 hours after getting your inquiry. For any urgent questions, you can call our sales manager at +86-13670043215.

All hardware orders will be shipped from China headquarters. Also, we provide oil filling and packaging services through our US branch.

After receiving the order, we will handle it as soon as possible. Lead time is usually 2-10 days depending on the order size and variety; delivery time is normally 3-5 days.

In order to facilitate customers all over the world, we have cooperated with many freight forwarders, such as DHL, TNT, UPS, EMS, Air freight and so on. And we will strive to give customers the greatest discount.

T/T, PayPal, Western Union, or other methods you required.

We have cooperated with forwarders to offer you the best freight. The shipment fee needs to be paid by buyers, and it is determined by weight and shipment method.

Yes, a sample order is much welcomed for checking product functionality and quality. We will customize a suitable sample for you according to your oil. It's free from MOQ requirements.