# Battery Tender Plus (021-0128) vs 128CEC2 12V 2/4/8A Charger, Maintainer & Desulfator: specs and price compared

A sourced, side-by-side comparison of the Battery Tender Plus (021-0128) (Battery Tender) and 128CEC2 12V 2/4/8A Charger, Maintainer & Desulfator (BatteryMINDer) among car battery chargers.

## Side by side

| Spec | Battery Tender Plus (021-0128) | 128CEC2 12V 2/4/8A Charger, Maintainer & Desulfator |
| --- | --- | --- |
| US price | not published | $223 |
| Brand | Battery Tender | BatteryMINDer |
| Max charge amps | 1.25 | 8 |
| Voltage support (V) | 12 | 12 |
| Battery chemistry | Flooded, Sealed/GRT (Gas Recombinant Technology), and AGM 12V lead-acid batteries | Flooded, sealed, AGM, and deep-cycle lead-acid; 12V Lithium (LiFePO4); Odyssey-approved |
| Modes | Fully automatic 4-step charging: bulk charge, absorption, and adaptive float/maintenance (ISM) | Selectable 2/4/8A charge rate; 7-stage charging with pulse-type desulfation; can maintain up to 8 batteries simultaneously with accessory connectors |
| Waterproof rating | — | IP65 |
| Reverse polarity protection | — | Yes |
| Display | 3-LED indicator (red = bulk charging, flashing green = absorption, solid green = float/complete) | 18-LED indicator array showing state-of-charge and status mode |
| Temperature compensation | — | Yes |

## Key differences

- Max charge amps: Battery Tender Plus (021-0128) 1.25 vs 128CEC2 12V 2/4/8A Charger, Maintainer & Desulfator 8
- Battery chemistry: Battery Tender Plus (021-0128) Flooded, Sealed/GRT (Gas Recombinant Technology), and AGM 12V lead-acid batteries vs 128CEC2 12V 2/4/8A Charger, Maintainer & Desulfator Flooded, sealed, AGM, and deep-cycle lead-acid; 12V Lithium (LiFePO4); Odyssey-approved
- Modes: Battery Tender Plus (021-0128) Fully automatic 4-step charging: bulk charge, absorption, and adaptive float/maintenance (ISM) vs 128CEC2 12V 2/4/8A Charger, Maintainer & Desulfator Selectable 2/4/8A charge rate; 7-stage charging with pulse-type desulfation; can maintain up to 8 batteries simultaneously with accessory connectors
- Display: Battery Tender Plus (021-0128) 3-LED indicator (red = bulk charging, flashing green = absorption, solid green = float/complete) vs 128CEC2 12V 2/4/8A Charger, Maintainer & Desulfator 18-LED indicator array showing state-of-charge and status mode

## Sources

- Battery Tender Plus (021-0128): https://www.manualslib.com/manual/1661410/Battery-Tender-Plus-12v1-25a.html (manualslib.com, verified 2026-08-01)
- 128CEC2 12V 2/4/8A Charger, Maintainer & Desulfator: https://www.batteryminders.com/batteryminder-model-128cec2-12v-2-4-8-amp-charger-maintainer-desulfator-lithium-charger-maintainer/ (batteryminders.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/car-battery-chargers/battery-tender-plus-021-0128-vs-batteryminder-128cec2/
Cite: Per The Front Desk Review, Battery Tender Plus (021-0128) (not published) vs 128CEC2 12V 2/4/8A Charger, Maintainer & Desulfator ($223) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/car-battery-chargers/battery-tender-plus-021-0128-vs-batteryminder-128cec2/
License: CC BY 4.0.