🔋💻 Lenovo 20V 65W Laptop Charger
 
(20V 3.25A AC Adapter • 65W • 4.0mm x 1.7mm Barrel Connector • No Center Pin)

This compact AC adapter delivers 65W of regulated DC power to Lenovo laptops using the small barrel connector. With a 4.0mm outer / 1.7mm inner diameter and no center pin, it’s used across IdeaPad, Flex, Yoga, Miix, and Chromebook families — especially in lightweight and budget-friendly models.
 
🔧 Charger Form
Input: 100–240V AC, 50/60Hz
Output: 20V DC, 3.25A (65W)
Connector: 4.0mm outer / 1.7mm inner barrel, no center pin
Inline power brick with detachable AC cord
Lightweight and travel-friendly design
 
🖥️ Compatible Devices
📘 IdeaPad Series: 100, 110, 120s, 130, 310, 320, 320s, 330, 330s; 510s, 520s, 530s; 710s; S145, S340
🔄 Flex Series: Flex 4-1130, 4-1470, 4-1480, 4-1570, 4-1580; Flex 5-1470, 5-1570; Flex 6-14ARR, 6-14IKB
🧘 Yoga Series: Yoga 310, 510, 520, 710 (11", 14", 15"); Yoga 720 (select configs)
🖥️ Miix Series: Miix 310, 320, 510, 700 (barrel input variants)
💻 Chromebooks: N22, N23, N42; Lenovo V14, V15 (select configs)
 
✅ Common Uses
🔌 Powering Lenovo ultrabooks and convertibles in home, school, or travel setups
🧩 Replacing lost or damaged OEM chargers
🏢 Standardizing spares for IT support of entry-level Lenovo fleets
🎒 Keeping as a lightweight travel adapter
🧪 Testing Lenovo laptops with a known-good 65W supply
 
🧠 Signal Format
⚡ Input: Universal AC (100–240V)
🔋 Output: Regulated 20V DC, 65W max
🔌 No center pin — relies on barrel contact only
🔁 Backward compatible with some 45W laptops (safe, charges faster)
 
⚠️ Things to Watch Out For
📉 Using on laptops requiring 90W+ may cause performance throttling or slow charging
🔌 Connector must match — not interchangeable with slim-tip, USB-C, or round-barrel plugs
🧯 Avoid third-party clones with poor contact — may cause intermittent charging
🌀 Excess heat or frayed cables can cause power dropouts
🧪 Always confirm connector type and wattage before swapping adapters
 
🛠️ Quick Tips for Beginners
🧭 Check underside of laptop or original charger for voltage and connector size
🔌 Use only with laptops rated for 65W and 4.0mm barrel input
🧪 If laptop reports “adapter not recognized,” inspect barrel contact and cable integrity
🧯 Label adapters clearly to avoid mix-ups with slim-tip or USB-C chargers
🧵 Keep one at desk and one in travel bag for convenience