# Battery Tender Plus (021-0128): specs and price

**Price (US):** Not published (batterytender.com returned HTTP 429 on every fetch attempt this session; Home Depot, BatteryMart, Walmart and Summit Racing pages either 403'd or returned CAPTCHA/blank content, so no current USD price could be confirmed from an accessible source.), as of 2026-08-01.
**Brand:** Battery Tender
**Deskmark:** Bronze Deskmark — pay-blind category standing 2/100, #11 of 13 in class (independent, computed from sourced data, never for sale).

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | Not published |
| Brand | Battery Tender |
| Max charge amps | 1.25 |
| Voltage support (V) | 12 |
| Battery chemistry | Flooded, Sealed/GRT (Gas Recombinant Technology), and AGM 12V lead-acid batteries |
| Modes | Fully automatic 4-step charging: bulk charge, absorption, and adaptive float/maintenance (ISM) |
| Waterproof rating | — |
| Reverse polarity protection | — |
| Display | 3-LED indicator (red = bulk charging, flashing green = absorption, solid green = float/complete) |
| Temperature compensation | — |

## Where it stands

On the spec sheet, its max charge amps of 1.25 is below the median of the 13.

## Frequently asked questions

**How much does the Battery Tender Plus (021-0128) cost?**

The Battery Tender Plus (021-0128) has no published US price as of 2026-08-01.

**What are the Battery Tender Plus (021-0128)'s key specs?**

Battery Tender Plus (021-0128) (Battery Tender): max charge amps 1.25, voltage support v 12, battery chemistry Flooded, Sealed/GRT (Gas Recombinant Technology), and AGM 12V lead-acid batteries, modes Fully automatic 4-step charging: bulk charge, absorption, and adaptive float/maintenance (ISM), display 3-LED indicator (red = bulk charging, flashing green = absorption, solid green = float/complete). Full sourced spec sheet verified 2026-08-01.

Source: https://www.manualslib.com/manual/1661410/Battery-Tender-Plus-12v1-25a.html (manualslib.com, accessed 2026-08-01)
Canonical: https://frontdeskreview.com/product/car-battery-chargers/battery-tender-plus-021-0128/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl