The HP F F550 uses a 4-cell lithium-ion battery rated around 14.6V to 14.8V, with capacity in the 31Wh to 41Wh range. Most 15-f models in this family take an LA04-family pack such as part 776622-001, with related numbers including 728248-121 and 751906-541. The pack is removable and slides out through the bottom latch. Before ordering, confirm the part number on your current battery, since the F550 priced at $56.99 should match the exact model you own.

Check the part number printed on your current battery first, then match it to the listing. Common 15-f numbers include LA04, 776622-001, 728248-121, 751906-541, and HSTNN-IB6R. You can also confirm your sub-series (F550, F30, F450, F80, F41, or F570) from the label on the bottom of the laptop. Most of these models share the same 4-cell lithium-ion footprint rated 14.6V to 14.8V, but verifying the printed number is the surest way to get the exact match.

HP F replacement batteries run $56.99 in this category. That covers the 4-cell lithium-ion packs used across the 15-f sub-series, including LA04-family numbers like 776622-001 and 751906-541. Price does not change based on which sub-series you have, since these models share the same battery footprint and capacity range of roughly 31Wh to 41Wh. Confirm the part number on your current pack so the $56.99 battery you order is the correct fit.

Often, but not always, so confirm the part number before assuming. The majority of 15-f models share the same physical 4-cell footprint and use an LA04-family pack such as 776622-001 or 728248-121. The key distinction is between the LA04 and OA04 families, which have different connector configurations. Two similar-looking models in this line can take different batteries, so match the number printed on your old pack rather than relying on the model name alone.

The sub-series mainly differ by processor and color, not battery architecture, so the F550, F30, F450, F80, F41, and F570 nearly all use the same 4-cell lithium-ion footprint. Voltage stays around 14.6V to 14.8V with capacity near 31Wh to 41Wh across the range. The one difference that matters is the LA04 versus OA04 family, which use different connectors. Part numbers such as 776622-001 and 751906-541 vary by year, so check the label to confirm yours.

Look at the label printed on your current battery, where you will see a number like 776622-001, LA04, 728248-121, or HSTNN-IB6R. On these 15-f models the pack is removable, so slide the bottom latch, lift the battery out, and read the number on the underside. You can also check the service label on the bottom of the laptop to confirm your sub-series (F550, F30, F450, F80, F41, or F570) before matching it to the right battery.

Yes, replacement is straightforward because these 15-f models use a removable battery. Power down the laptop, flip it over, and release the sliding latch on the bottom. The 4-cell lithium-ion pack lifts out without removing the back cover or using tools. Slide the new battery in until the latch clicks, then charge fully before first use. Confirm the part number first, such as 776622-001 or 751906-541, so the replacement seats and connects correctly.

Watch for a runtime that drops well below normal, a charge that stalls or will not complete, or a laptop that shuts off the moment you unplug it. On these 4-cell lithium-ion packs rated 14.6V to 14.8V and around 31Wh to 41Wh, a battery that no longer holds a useful charge is the clearest sign. If your machine reports the battery as failing or it powers only when plugged in, plan a replacement using a matching part number like 776622-001.