HT03XL is an HP laptop battery model (family code) used across many mainstream 14″/15″/17″ HP notebooks. It is a 3-cell lithium-ion pack with a nominal energy around 41.04Wh in the 11.4–11.55V voltage group. A very common HP spare part number printed on the label is L11119-855 (other regional/lot codes also exist).
HT03XL at a glance
- Battery family/model: HT03XL (aka HT03041XL)
- Chemistry: Lithium-ion (often pouch “Li-ion polymer” cells — still Li-ion)
- Configuration: 3-cell (3S); nominal 11.4–11.55V
- Typical capacity: ~41.04Wh
- Common HP spare P/N: L11119-855 (plus related L/HSTNN codes)
Which laptops use HT03XL?
HT03XL is widely fitted to HP’s consumer and edu/business lines. Below are the main families (not exhaustive):
HP 14 Series
14-cf / 14-ck / 14-cm / 14-df / 14-dg / 14-dk / 14-dq / 14-fq / 14-ma
14q-cs / 14q-cy · 14s-cf/cr/cs/dk/dp/dq/fq · 14t-dq
HP 15 Series
15-da / 15-db / 15-dw / 15-dy / 15-ef / 15-gw
15q-ds/dy · 15S-DU · 15s-eq/fq · 15t-cs/cu/da/dy · 15z-cw
HP 17 Series
17-by / 17-ca · 17q-cs · 17t-by · 17z-ca
Business/Edu G-Series
240/245/246/250/255/256 G7–G8 · 340/340S/348 G5–G7 · 470 G7
HP Pavilion & Envy
Pavilion 14-ce · Pavilion 15-cs/cu/cw
Pavilion x360 14-dh / 15-dq · Envy x360 15-cn
Show full compatible strings (long list)
How to confirm your battery is HT03XL
- Power off and (if your model allows) remove the base cover.
- Read the label on the pack — look for HT03XL and a spare P/N such as L11119-855.
- Match voltage group (11.4–11.55V) and connector; don’t mix with 14.4/15.2V families.
When to replace
- Windows Battery Report health (Full Charge Capacity ÷ Design) < ~70–75%.
- HP Diagnostics reports “Replace” or the pack is swollen/overheating.
- Frequent % jumps, rapid drain, or unexpected shutdowns.
Bottom line: HT03XL is HP’s 3-cell, ~41Wh, 11.4V lithium-ion battery family used in many HP 14/15/17 and G-series models. Check your label for L11119-855 to confirm, and replace like-for-like within the same voltage group.