Quick answer: for most people in Sri Lanka the best choice is a 10000mAh power bank with fast charging. It charges a typical phone about two times and fits in a pocket. Choose 20000mAh for travel, long power cuts or charging two devices, and a magnetic wireless power bank if you use a MagSafe iPhone and want no cables.
How much capacity do you need?
| Capacity | Approximate phone charges | Best for |
|---|---|---|
| 5000mAh | About 1 | Slim, light, top ups during the day |
| 10000mAh | About 2 | Daily use, office, university |
| 20000mAh | About 4 or more | Travel, power cuts, tablets, two devices |
Real charges are a little lower than the number suggests because some energy is lost as heat. That is normal for every brand.
What features matter most?
- Fast charging. Look for PD or a watt rating such as 20W or 22.5W. Your phone must support fast charging too.
- Built in cables. Very handy in Sri Lanka where people share chargers between iPhone and Android.
- Digital display. Shows the exact battery percentage left.
- Magnetic wireless. Snaps onto MagSafe iPhones, no cable needed.
- Protection. Over heating, over charge and short circuit protection.
Which power banks do we recommend?
Live prices, island wide delivery. Buy 5 or more of the same model for the wholesale price.
Best everyday choice: Ven-Dens 10000mAh 22.5W with built in cables
Fast charging, a digital display and built in cables for iPhone and USB C phones.
Ven-Dens 10000mAh 22.5W Fast Charging Power Bank with Built in Cables
| Quantity | Price per piece |
|---|---|
| Retail, 1 to 4 pcs | LKR 3,675 |
| Wholesale, 5 to 10 pcs | LKR 3,190 |
| Bulk, 11+ pcs | Registered suppliers only |
Live price from our store, updated October 2026. View product
Best value: Ven-Dens 10000mAh 3 in 1
Built in USB C, Lightning and Micro USB cables at a lower price.
Ven-Dens 10000mAh 3 in 1 Power Bank with Built in Cables
| Quantity | Price per piece |
|---|---|
| Retail, 1 to 4 pcs | LKR 2,625 |
| Wholesale, 5 to 10 pcs | LKR 2,255 |
| Bulk, 11+ pcs | Registered suppliers only |
Live price from our store, updated October 2026. View product
Best for travel and power cuts: Ven-Dens 20000mAh 3 in 1
Four or more phone charges with three built in cables.
Ven-Dens 20000mAh 3 in 1 Power Bank with Built in Cables
| Quantity | Price per piece |
|---|---|
| Retail, 1 to 4 pcs | LKR 4,200 |
| Wholesale, 5 to 10 pcs | LKR 3,630 |
| Bulk, 11+ pcs | Registered suppliers only |
Live price from our store, updated October 2026. View product
Best for iPhone: LITO LP08 5000mAh magnetic wireless
Slim magnetic power bank that snaps onto MagSafe iPhones.
LITO LP08 5000mAh Magnetic Wireless Power Bank
| Quantity | Price per piece |
|---|---|
| Retail, 1 to 4 pcs | LKR 6,825 |
| Wholesale, 5 to 10 pcs | LKR 5,748 |
| Bulk, 11+ pcs | Registered suppliers only |
Live price from our store, updated October 2026. View product
See all power banks.
Can you take a power bank on a flight?
Most airlines allow power banks under 100Wh in hand luggage only. A 10000mAh power bank is about 37Wh and a 20000mAh power bank about 74Wh, so both are usually fine. Power banks are not allowed in checked luggage. Always check the rules of your airline before you fly.
How do you make a power bank last longer?
- Recharge it before it reaches zero.
- Keep it out of direct sun and hot cars.
- Use a good cable and charger to refill it.
- If it swells or gets very hot, stop using it.
Not sure if a power bank is real? Read how to spot fake accessories.
Power bank questions
Which power bank capacity is best for daily use?
A 10000mAh power bank is enough for most people. It charges a typical phone about two times and fits in a pocket.
Is a 20000mAh power bank worth it?
Choose 20000mAh if you travel, charge two devices, or need four or more phone charges between plugs.
Can I take a power bank on a flight from Sri Lanka?
Most airlines allow power banks under 100Wh in hand luggage only, which includes 10000mAh and 20000mAh models. Always check with your airline.
What is a built in cable power bank?
It has its own USB C, Lightning or Micro USB cables attached, so you do not need to carry a separate cable.
Where can I buy a power bank online in Sri Lanka?
Core X Lanka sells power banks at retail and wholesale prices at corexlanka.com, with island wide delivery and cash on delivery.
