Keeping your iPhone charged is a constant battle. There are plenty of tips for how to make your iPhone’s battery last longer by turning off features like 3G or GPS. But sometimes, you just have to unleash the full power of the iPhone. Here are 7 ways to get power to your iPhone throughout the day and never see that dreaded 10% battery warning again.

1. Dock Connector to USB Cable

Having an extra USB iPhone cable is probably the most important additional step you can take for keeping your iPhone charged. The cable can be plugged into PCs, laptops, wall chargers, car chargers, docks, portable batteries, or just about anything that has a powered USB port. The official cable from Apple costs $19, but Amazon has some third-party versions for cheap, like the Eforcity Retractable iPhone cable for $3.

2. Wall Charger

An extra wall charger is another easy way to keep your iPhone charged up throughout the day. Outlets are everywhere, even in public places. In fact, most airports have added free charging stations where you can plug in and charge your mobile devices. I personally keep an extra charger and cord at work. Apple sells the the official wall charger for $30 in their store, but some Amazon vendors sell them for as cheap as $5. Please note that Apple did a recall for some old iPhone wall chargers because the prongs could break off in the outlet and create a risk of shock.

3. Docks

An iPhone dock can make recharging and synching the iPhone a much more comfortable experience. Cords get tangled, tend to get moved or dropped behind desks, etc. But a dock stays stationary and allows you to quickly drop the iPhone in for a charge. Docks also keep the iPhone upright so you can view the screen easily from a sitting position. Plus, the iPhone just looks cool sitting in a dock.

Apple sells an official dock for $29. A cool third-party dock I use is the Griffin Simplifi for $45 (seen below).

4. Car Chargers

Thanks to GPS turn-by-turn directions and stereo Bluetooth, the iPhone can burn a lot of battery in the car. iPhone car chargers are an affordable way to keep the iPhone charged up while driving. The XtremeMac InCharge is a basic charger for $19. There are also fancier versions that offer car mounts and control dongles that you can attach to your steering wheel.

5. iPhone Cases With Built-in Batteries

Nothing is more convenient than a battery case. These cases often double the battery life of your iPhone while still allowing you to use the iPhone as normal (no need to plug the iPhone into anything or stop using its features). And some battery cases, like the Mophie Juice Pack Air ($79), are relatively slim and won’t add too much bulk to your iPhone. The downside to battery cases is that they can be expensive and some aren’t quite as svelte as the Juice Pack. Synching your iPhone also can be a hassle, with some cases requiring you to remove them in order to plug in the iPhone. Some users also report loss of signal strength for the iPhone when in battery cases.

6. Portable USB Batteries

Portable USB batteries are perfect for charging the iPhone when traveling in places with no wall outlets or other power sources. USB batteries can be relatively inexpensive, like the Rekkeon TekCharge for $25. USB batteries are either powered by a rechargeable laptop battery or by AA batteries that you can supply yourself. They can be used with just about any gadget that recharges via USB. Their downside is that they’re just one more thing you have to pack and carry around with you.

7. Wireless Recharging Pad

Recharging pads are relatively new to the mainstream world of gadgets. They are dubbed “wireless” because the gadget is charged by simply laying it on the pad–no wired connection needed. The WildCharge ($80, comes with special iPhone case) is the first charging pad for the iPhone. This solution may best for those who rarely sync their iPhone with the computer. It also works with a number of other mobile electronics too.