10-Pack 6.3V 1500uF Premium Quality Low ESR Electrolytic Capacitors 10x13mm (0.4x0.51in), 6.3Volt 1500MFD High-Frequency Caps with Superior Performance

I ordered two 3300 µF Low ESR 50V electrolytic capacitors to repair a vintage 1979 12V DC / 2.5A power supply. Since I care about component quality, I tested them with two different ESR meters before installation.My measurements: (Room Temp 77F(25C)Capacitor #1: 3139 µF, ESR = 0.020 ΩCapacitor #2: 3115 µF, ESR = 0.018 Ω--> For context: These values are well within the ±20% tolerance rating (acceptable range 2640–3960 µF).The ESR readings are extremely low — which is very good, exactly what you want in a “Low ESR” capacitor, since it means better efficiency and less heat buildup.Compared to the old capacitor (original 5000 µF from 1979):Old capacitor: Measured 5800 µF, ESR = 0.360 ΩNew pair in parallel: 6254 µF total, combined ESR ≈ 0.0095 ΩThis means not only did I gain extra filtering capacity (better smoothing of the DC voltage), but the effective resistance dropped by nearly 40×. That translates to much better ripple handling, more stable power, and longer-lasting performance.I installed the two capacitors in parallel to replace the original single capacitor, and the power supply is now running cooler, cleaner, and more stable than before.Summary:These JCCON capacitors tested well within spec, showed truly low ESR values, and outperformed the original vintage capacitor by a huge margin. Excellent choice for power supply repairs or DIY electronics projects. Very happy with this purchase.

These capacitors work great and test as advertised. Good value for the price.

Great caps works perfectly. Nicely packaged.

Capacitance is within range and works like it's supposed to.

Works well to replace a 35volt capacitor that exploded. At about .50 cents each, to me seems to be a good value

hard to determine physical dimensions from description ! but doable with dilligence

I have a garage door opener that does not work with the remote sometimes. Bought this and tested every single one and they were between 2% and 5% states values which is excellent. Can't wait to repair my unit.

Worked well in a USB power circuit to replace one installed backwards by the pwa vendor. Voltage prior to replacement was 4.25 V and 5.25 V after replacement.