Best rechargeable lithium batteries: what 1.5V AA cells really hold
Updated 2026-11-10 · Pick: XTAR 1.5V AA CLR 4300 Li-ion · Dealectric link: XTAR 1.5V AA 4150 mWh / 2500 mAh, 8-pack, $45.99 on Amazon (checked 2026-11-12), buy on Amazon: https://www.amazon.com/dp/B0CF8WTYX4?tag=dealectric-20
Short answer. The best rechargeable lithium AA batteries are the XTAR CLR 4300. In a 20-model 1.5V lab test it delivered 3,703 mWh, the most of any model, though that is only 86% of its 4,300 mWh label. EBL's 3000 mWh cells beat their own label, so compare tested energy, not the label.
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How this table was made: each figure comes from the maker's own US product page or manual, or from the reviewer named next to it, checked 2026-11-10. Dealectric does not test units itself. Rows with a Buy link are products Dealectric lists: the links are affiliate links, and their codes are re-tested in the brand's own cart every day (last check 2026-11-13).
| Model | Label rating | Measured energy | Measured ÷ label | Near empty | Charges in | Price | Buy |
|---|---|---|---|---|---|---|---|
| XTAR 1.5V AA CLR 4300 Li-ion | 4,300 mWh / 2,700 mAh | 3,703 mWh, average of 0.1/0.4/1 A (Charge-Test) | 86% | Voltage slopes down to about 1.0 V, so a battery gauge can warn you (XTAR) | XTAR L4 Pro, MX4, L4, L8 or VX4 V2 (not VX4 V1) | $26.99 4-pack, US warehouse (maker, 2026-11-10) | |
| XTAR 1.5V AA 4150 mWh / 2500 mAh, 8-pack | 4,150 mWh / 2,500 mAh | 3,420 mWh (Charge-Test); 2,422 mAh at 0.5 A (Gough Lui) | 82% | Steps down to 1.1 V for about the last 20% of runtime (Gough Lui) | XTAR 1.5V Li-ion charger (Gough Lui tested it on the XTAR L4) | $45.99 on Amazon (checked 2026-11-12) | Buy on Amazon |
| K&F Concept AA 1.5V Lithium 3600 mWh, 8-pack with charger (KF28.0112) | 3,600 mWh | 3,278 mWh, average of 0.1/0.4/1 A (Charge-Test) | 91% | Switches to 1.0 V below 10% charge (K&F) | Included 8-slot charging case, 5V/3A USB-C input | $24.99 8 cells + charger (maker, 2026-11-10) | |
| EBL 1.5V AA Lithium 3000 mWh, 4-pack | 3,000 mWh | 3,273–3,404 mWh, 8 cells on an XTAR VX4 V2 (Light And Matter) | 109–113% | The gauge reads full until the cells are dead, then drops to empty at once (Light And Matter) | A 1.5V Li-ion charger; a NiMH charger won't charge them (Light And Matter) | $31.48 4-pack (maker, 2026-11-10) |
What the differences mean
- Label versus measured. CLR 4300: 3,703 ÷ 4,300 = 86%. XTAR 4150: 3,420 ÷ 4,150 = 82%. K&F: 3,278 ÷ 3,600 = 91%. EBL: 3,273–3,404 ÷ 3,000 = 109–113%.
- The 38% lead on the label nearly disappears. By label, the XTAR 4150 holds 38% more than the EBL (4,150 ÷ 3,000 = 1.38). Measured, the lead is 0.5–4.5% (3,420 ÷ 3,404 = 1.005; 3,420 ÷ 3,273 = 1.045). The two figures come from different test rigs, so treat this as a direction, not a head-to-head result.
- CLR 4300 against the XTAR 4150. 3,703 ÷ 3,420 = 1.083, so the CLR 4300 gives 8% more energy per charge. At 1 A the gap grows to 13% (3,719 ÷ 3,297).
- Cost per measured Wh at maker-store prices on 10 Nov 2026. CLR 4300: 26.99 ÷ (4 × 3.703 Wh) = 1.82 dollars per Wh. K&F, charger included: 24.99 ÷ (8 × 3.278 Wh) = 0.95 dollars per Wh. EBL: 31.48 ÷ (4 × 3.273–3.404 Wh) = 2.31–2.40 dollars per Wh.
| Use | Fits | Why |
|---|---|---|
| Most runtime per charge (trail cameras, controllers, toys) | XTAR CLR 4300 | 3,703 mWh measured; rated for a 2.5 A maximum discharge current (XTAR) |
| Starting from zero, with no charger yet | K&F Concept 8-pack with charger | About 0.95 dollars per measured Wh, charger included |
| Devices with a battery gauge | XTAR CLR 4300 or XTAR 4150 | The sloped or stepped voltage at the end gives a warning. The EBL drops from full to empty with no warning. |
| Charging with no charger, e.g. on the road | Paleblue AA USB-C | Each cell has its own USB-C port, and the included cable charges four at once in about 1 hour (Paleblue) |
| Speedlight flashes | NiMH, not lithium AA | Light And Matter: on a Godox TT685 the EBL took 10.72 s to recycle (17.55 s once it throttled) against 2.23 s for the best NiMH |
| Blink cameras | Non-rechargeable lithium AA | Blink specifies non-rechargeable lithium-metal AAs for the Outdoor 4 |
Why the label on a 1.5V lithium AA overstates it
A 1.5V lithium AA is a 3.6V Li-ion cell with a converter that holds the output near 1.5V (XTAR). The mWh printed on the label is not what reaches your device. The XTAR 4150 shows how this works. 4,150 mWh ÷ 1.5 V would be 2,767 mAh, yet XTAR rates the cell at only 2,500 mAh. Gough Lui measured 2,422 mAh at 0.5 A, at an average of 1.42 V: 2,422 × 1.42 = 3,439 mWh. That agrees with Charge-Test's separate 3,420 mWh. The mAh rating was close to the truth; the mWh rating was the one inflated. The EBL runs the other way: it carries no mAh rating, and Light And Matter measured more energy than its 3,000 mWh label.
Current matters too. On XTAR's own test-results page, Gough Lui's CLR 4300 cells gave 2,599–2,739 mAh at 1 A but only 2,298–2,438 mAh at 2 A. For the XTAR 4150, Gough Lui advises staying under 1.25 A.
Lifespan is the other number missing from the label. Charge-Test says its ranking does not cover service life. Gough Lui ran the XTAR 4150 through 100 cycles in the lab and measured a loss of 0.85–0.89 mWh per cycle. That projects to 80% of its energy at about 843 cycles, against XTAR's 1,200-cycle rating (843 ÷ 1,200 = 70%). XTAR supplied the samples. Of the cells on this page, the 4150 is the only one with a published cycle-wear test, which makes it the pick if you want measured durability as well as near-top energy: buy on Amazon: https://www.amazon.com/dp/B0CF8WTYX4?tag=dealectric-20.
Charging is the catch. The cells manage their own charging and need a charger that supplies 4.75–5.5 V. A NiMH-only charger won't work, and XTAR says its older VX4 V1 cannot charge the CLR 4300. The XTAR L4 Pro (15.90 dollars at XTAR on 10 Nov 2026) charges both 1.5V Li-ion and NiMH AA/AAA cells.
Not recommended
PUJIMAX AA (4,255 mWh label). It has the biggest number on the shelf and delivered about 2,255 mWh in Charge-Test's lab, 53% of its label (2,255 ÷ 4,255). The Hixon 3500 (3,339 mWh) and UseNiy 3600 (3,162 mWh) also tested below both XTAR cells. EBL for Apple mice and keyboards, or flashes: an EBL store listing says its 1.5V lithium AAs can't be used in Apple mice and keyboards, and Light And Matter measured flash recycle times up to 8 times slower than NiMH.
Sources
- Measured energy and ranking: XTAR CLR 4300 3,703 mWh (3,719 at 1 A), XTAR 4150 3,420 mWh (3,297 at 1 A), Hixon 3,339, K&F 3,278, UseNiy 3,162, PUJIMAX about 2,255 vs 4,255 rated; method; no service-life finding — charge-test.com
- XTAR CLR 4300 rating 4,300 mWh / 2,700 mAh, 1,200+ cycles, US-warehouse 4-pack price — xtardirect.com
- XTAR CLR 4300 charging input 4.75–5.5 V, 2.5 A max discharge current, recommended chargers — www.xtar.cc
- VX4 V1 cannot charge CLR/LR 1.5V cells; VX4 V2 can — xtardirect.com
- Discharge-curve classes (sloped CLR, stepped 4150) and CLR 4300 capacity at 1 A, 1.5 A and 2 A (Gough Lui figures) — www.xtar.cc
- 1.5V Li-ion AA uses an internal 3.6 V cell; charging voltage 4.75–5.5 V — xtar.cc
- XTAR 4150: 2,422 mAh at 0.5 A, 1.42 V average, 1.1 V step, cycle wear 0.85–0.89 mWh/cycle to about 843 cycles at 80%, advice to stay under 1.25 A, charged on the L4 (Gough Lui) — goughlui.com
- XTAR 4150 rating 4,150 mWh / 2,500 mAh and 1,200-cycle claim — xtardirect.com
- K&F Concept 3600 mWh 8-pack with charger: price, 1.0 V switch below 10%, 5V/3A USB-C charging case — www.kfconcept.com
- EBL measured 3,273–3,404 mWh, full-to-empty cutoff, NiMH chargers won't work, flash recycle times (Light And Matter) — www.lightandmatter.org
- EBL 3000 mWh AA 4-pack rating and price — www.eblofficial.com
- EBL: can't be used in Apple mice and keyboards — www.eblofficial.com
- Blink Outdoor 4 specifies non-rechargeable lithium-metal AA cells — blink.helpjuice.com
- Paleblue AA USB-C charging: four at once in about 1 hour with the included cable — paleblueearth.com
- XTAR L4 Pro charges AA/AAA NiMH and 1.5V Li-ion, 15.90 dollars — xtardirect.com
Published 2026-11-10; updated 2026-11-10. The buy links are affiliate links; see the disclosure. Corrections welcome at [email protected] or /feedback.