Short answer: 1050mAh is the highest of the three LP-E17 capacities YO offers, and only about one percent above Canon’s original at roughly 1040mAh. The real gain shows up against the 750mAh version, where the difference is about forty percent. The cost is a slightly heavier pack and a slightly higher price, and neither is significant at the LP-E17 form factor. Put another way: if you are moving up from an old 750mAh pack, the change is perceptible; if you already carry an original LP-E17, this tier gives you headroom, not double.
First the three tiers in one table, then where the gain actually lands, then which bodies benefit most, so you do not pay for capacity you will never use.
Where 1050mAh sits in the three-tier lineup
The LP-E17 comes in 750, 950, and 1050mAh. That is a YO lineup of its own and does not map to any Canon model number, because Canon officially makes only the LP-E17, rated around 1040mAh / 7.5Wh / 7.2V. Keeping both in view is what stops “1050 is bigger than the original” from misleading you.
| Version | Rated capacity | Derived energy (at 7.2V) | Relative to the original rating | Typical role |
|---|---|---|---|---|
| Canon original LP-E17 | About 1040mAh | About 7.5Wh | 100% | Reference point |
| LP-E17 750mAh | 750mAh | About 5.4Wh | About 72% | Backup, light top-ups |
| LP-E17 950mAh | 950mAh | About 6.8Wh | About 91% | Everyday primary |
| LP-E17 1050mAh | 1050mAh | About 7.6Wh | About 101% | Long days out, fewer swaps |
The Wh figures are rough calculations from nominal voltage. Usable energy also depends on the discharge curve, the body’s cutoff voltage, and protection-board efficiency, so this table is for comparison across rows, not a formula for how many frames you will gain. The percentage column is a ratio of ratings, not of real runtime.
How much runtime you actually gain
Going from 750mAh to 1050mAh is a forty percent increase in rated capacity, which in practice is the difference between swapping three times and swapping twice. Going from 950mAh to 1050mAh is about ten percent, which you will not feel in daily shooting unless your day happens to sit right on the line. Against the original 1040mAh the two are essentially level, and the gap is buried under cell age and unit-to-unit variation.
Actual frame counts depend on how you frame, stabilization, screen brightness, burst frequency, and ambient temperature. The same battery might deliver six or seven hundred frames on an 850D used mostly with the optical finder, and only three or four hundred on an R8 using the electronic finder throughout, with a further discount outdoors in winter. A safe expectation is somewhere between five and seven hundred frames, moving with the body; no absolute “one battery equals N frames” claim holds.
Swap counts make it clearer. Suppose a body gets five hundred frames from a 950mAh. Scaling roughly, the ten percent a 1050mAh adds is about fifty frames, just enough for one more group photo. A 750mAh in the same conditions would give about four hundred, a gap of an entire shooting block. So the comparison worth making is 750 against 1050; between 950 and 1050 there is only a small margin.
The weight cost: you are adding cell, not shell
Within one series, higher capacity means a larger and heavier cell. The 1050mAh is usually under fifteen grams heavier than the 750mAh and close to the original LP-E17. On a single pack that is imperceptible, but four packs in a bag or long handheld sessions on a small body like the R50 turn it into a noticeable amount.
Conversely, the LP-E17’s physical size means a high-capacity version cannot add much weight: it has to fit the same compartment, and the structure and protection board are largely shared. So “high capacity means heavier and clumsier” is overstated at this form factor. Price, supply, and consistency are worth more of your attention than the feel.
Which bodies benefit most from 1050mAh
- Full-frame EOS RP and R8: the sensor and finder draw more, so the headroom in one pack directly determines whether you dare leave with only two.
- R10, R50, R100: small bodies with shallow grips make frequent swaps disruptive to your rhythm, and more capacity means fewer of them.
- 850D, 800D, 760D, 750D, 77D, 200D, 200D II: built around the optical finder with low draw, so a 1050mAh lasts a long time, the kind of pack you fit and stop thinking about.
- M6, M6 Mark II, M5, M3: mirrorless designs with a high proportion of screen framing, where the capacity gain is easier to feel.
If you shoot a few hundred frames occasionally and have a dock at home for topping up, the 950mAh is better value; if a single outing runs all day with no convenient charging, the 1050mAh’s headroom is what pays off. Check the body list against the LP-E17 capacity and compatibility guide, or go straight to current specifications in the 1050mAh category.
FAQ
Does 1050mAh last longer than the original Canon LP-E17?
The rating is only about one percent higher, so theoretically they are on the same level. Real performance depends more on cell age, protection-board losses, and operating temperature; do not expect a noticeable runtime increase.
Can the original LC-E17 charge a 1050mAh?
Yes. The LC-E17 is Canon’s dock charger for the LP-E17 and works by voltage rather than capacity, so a larger pack simply takes longer to fill.
Will 1050mAh make the body run hotter?
Not in normal shooting. Body heat comes mainly from bursts, long recordings, and internal resistance, not from the capacity tier. If the battery itself is noticeably hot at idle, stop using it and have it checked.
Does this battery work in the EOS M50?
No. The EOS M50, M100, and M200 take the LP-E12, which is not interchangeable with the LP-E17. Check your body model before buying.