Short answer: the 750mAh LP-E17 is the entry tier of YO’s own capacity range, rated 750mAh at 7.2V for about 5.4Wh, which is roughly seven tenths of a Canon original LP-E17 (about 1040mAh / 7.5Wh). Its value is pushing weight and unit cost as low as possible, so that carrying an extra battery costs you nothing. The trade-off is a thin margin: half a day of screen-framed work is fine, but all-day location work, bursts, long recording or cold weather will feel tight.
One thing should be clear from the start: Canon officially makes a single model, the LP-E17, and does not use capacity numbers such as 750mAh or 950mAh. The 750mAh is a tier defined inside this LP-E17 line, and once fitted it follows the LP-E17 spec for handshake, communication and gauge display, but it is not equivalent to any Canon battery.
Where 750mAh sits among the three tiers
The LP-E17 range comes in 750, 950 and 1050mAh, and the difference is not only the number. Lower capacity means a lighter battery at a lower price, but the voltage falls away earlier within the same period of use, so the camera is more likely to warn early.
| Tier | Nominal capacity | Against the 1040mAh original | Role |
|---|---|---|---|
| 750mAh | 750mAh / about 5.4Wh | About 72% | Entry tier, light and short sessions |
| 950mAh | 950mAh / about 6.8Wh | About 91% | Main tier, closest to the original |
| 1050mAh | 1050mAh / about 7.6Wh | About 101% | Long-runtime tier |
The column that matters is the third. 72% is not a gap you can wave away: it means that on a day when an original battery just lasts to the end, a 750mAh will raise the low-battery warning two or three hours earlier.
Balance is another dimension that gets ignored. With fewer cells, the 750mAh is the lightest battery of the three, which sits better on small bodies such as the R50 and R100; on a full-frame body such as the EOS RP the saving in weight is imperceptible while the loss in runtime is real. Much of the difference in how this tier is received on small bodies and on full-frame bodies comes from exactly this.
Where 750mAh is enough
- Commuting and daily records. A few dozen to a couple of hundred frames a day with the body idle most of the time is well within reach.
- Indoor studio, still life, product shots. With power available and swaps at any time, capacity is not the constraint.
- As a second or third spare. Run a 950mAh as primary and let the 750mAh cover the tail, which makes the whole kit lighter.
- Light street work and half-day trips. One body, one prime lens, two 750mAh batteries in the bag, and the weight is barely there.
The dividing line is not how many frames you shoot in total but whether you have a window to recharge. With a socket, a spare and a shoot that can be interrupted, the 750mAh is enough; once none of the three holds, capacity savings stop mattering. Working out which category you are in is more useful than memorizing numbers.
Where 750mAh is clearly not enough
Conversely, four kinds of work should not treat the 750mAh as a primary:
- All-day location work, wedding coverage, event records. There is no window to recharge, and a mid-session swap breaks the rhythm outright.
- Bursts, sport and birds. Focus motors and the burst buffer run continuously, drawing far more than single-frame work.
- Long video recording. Video is a constant-power load, so usable time from 750mAh is squeezed very short, and the body may stop early as the voltage sags.
- Cold conditions. Below 0°C internal resistance rises and deliverable capacity shrinks further, so the 750mAh hits the floor first.
Compatible bodies, and one misjudgment to avoid
The LP-E17 fits the EOS RP, R8, R10, R50, R100, 850D, 800D, 760D, 750D, 77D, 200D, 200D II, M6, M6 Mark II, M5 and M3. That list spans full-frame mirrorless, APS-C mirrorless, DSLRs and early EOS M bodies, whose power characteristics differ widely, and the same 750mAh battery can differ by more than a factor of two between them. The full spec range is in the LP-E17 battery overview.
One warning in particular: the EOS M50, M100 and M200 take the LP-E12, not the LP-E17. The three look similar but the contacts and the bay differ, so they cannot be mixed; check the label in the battery compartment before buying. A fuller account of capacity and compatibility is in the LP-E17 capacity and compatibility guide, and for a direct comparison with higher capacity see the LP-E17 950mAh section.
One last practical detail: the same 750mAh draws very differently with an old manual-focus lens and with a stabilized zoom. If you work through an EF adapter, the adapter itself draws power, so it is worth downgrading the 750mAh one more step and treating it as an emergency battery only, not something to carry a whole session.
FAQ
Can the 750mAh replace an original LP-E17?
It fits and it works, but it should not be your only battery. It is an entry tier built around being adequate, so if you currently rely on an original to cover a full day, moving to 750mAh will feel like a clear loss of runtime. In that case go straight to the 950mAh.
Can the 750mAh be charged on a Canon LC-E17 dock charger?
Yes. Charging specs are shared across the LP-E17 range, and the Canon LC-E17 dock charger and most third-party LP-E17 dock chargers will charge a 750mAh battery. A smaller battery fills faster, so the indicator turns green considerably sooner than it would with a 1050mAh.
Two 750mAh batteries or one 950mAh?
Two 750mAh batteries total 1500mAh, clearly more, but they cost you a swap and extra weight. If the shoot cannot be interrupted, one 950mAh plus one 750mAh is usually steadier than two 750mAh batteries.